- Expert technical & legal evaluation of any published patent or
liklihood of infringement.
- Broaden patent claims for new and recently issued patents.
- Creation or acquisition of new "blocking" patents to strengthen a
with one of the best patent firms in Silicon Valley that has already
produced 20 new RFID and display patents.
- Roger Stewart has successfully negotiated numerous national
several clients based on the negotiation training he received at
MIT & Sarnoff. Patent licensing services are provided on an
hourly basis.
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List of Stewart's Issued USA Patents
1. 3,947,727 Protection circuit for insulated-gate field-effect transistors
2. 3,967,295 Input transient protection for integrated circuit element
3. 3,999,205 Rectifier structure for a semiconductor integrated circuit device
4. 4,037,114 Tri-state logic circuit
5. 4,039,858 Transition detector
6. 4,044,341 Memory array
7. 4,045,688 Power-on reset circuit
8. 4,061,962 Current mirror amplifier augmentation of regulator transistor current flow
9. 4,063,225 Memory cell and array
10. 4,075,690 Write enhancement circuit
11. 4,080,539 Level shift circuit
12. 4,107,556 Sense circuit employing complementary field effect transistors
13. 4,185,319 Non-volatile memory device
14. 4,208,730 Precharge circuit for memory array
15. 4,216,390 Level shift circuit
16. 4,236,199 Regulated high voltage power supply
17. 4,239,994 Asymmetrically precharged sense amplifier
18. 4,281,400 Circuit for reducing the loading effect of an insulated-gate IGFET on a signal source
19. 4,329,600 Overload protection circuit for output driver
20. 4,337,522 Memory circuit with means for compensating for inversion of stored data
21. 4,339,809 Noise protection circuits
22. 4,344,005 Power gated decoding
23. 4,354,255 Random access memory with volatile and non-volatile storage
24. 4,386,284 Pulse generating circuit using current source
25. 4,398,102 Gated parallel decoder
26. 4,405,996 Precharge with power conservation
27. 4,419,741 Read only memory (ROM) having high density memory array with on pitch decoder circuitry
28. 4,423,432 Apparatus for decoding multiple input lines
29. 4,434,381 Sense amplifiers
30. 4,442,447 Electrically alterable nonvolatile floating gate memory device
31. 4,450,562 Two level parity error correction system
32. 4,464,754 Memory system with redundancy for error avoidance
33. 4,464,755 Memory system with error detection and correction
34. 4,472,805 Memory system with error storage
35. 4,513,397 Electrically alterable, nonvolatile floating gate memory device
36. 4,527,081 Overshoot pre-driven semi-asynchronous driver
37. 4,558,240 Multi mode amplifier
38. 4,577,215 Dual word line, electrically alterable, nonvolatile floating gate memory device
39. 4,589,008 Apparatus for electrically joining the ends of substantially parallel semiconductor lines
40. 4,608,591 Electrically alterable programmable nonvolatile floating gate memory device
41. 4,612,466 High-speed output driver
42. 4,618,876 Electrically alterable, nonvolatile floating gate memory device
43. 4,738,514 Crystal variation compensation circuit for liquid crystal displays
44. 4,742,346 System for applying grey scale codes to the pixels of a display device
45. 4,760,557 Radiation hard memory cell circuit with high inverter impedance ratio
46. 4,766,430 Display device drive circuit
47. 4,828,365 Multicolor filter for producing purer white across a display device
48. 4,833,644 Memory cell circuit having radiation hardness
49. 4,872,002 Integrated matrix display circuitry
50. 4,903,094 Memory cell structure having radiation hardness
51. 4,926,236 Multilayer interconnect and method of forming same
52. 4,933,904 Dense EPROM having serially coupled floating gate transistors
53. 4,947,221 Memory cell for a dense EPROM
54. 4,963,860 Integrated matrix display circuitry
55. 4,965,646 Thin film transistor and crossover structure for liquid crystal displays
56. 4,968,119 High-density liquid-crystal active dot-matrix display structure
57. 4,989,061 Radiation hard memory cell structure with drain shielding
58. 5,076,667 High speed signal and power supply bussing for liquid crystal displays
59. 5,093,581 Circuitry for generating pulses of variable widths from binary input data
60. 5,105,187 Shift register for active matrix display devices
61. 5,122,676 Variable pulse width generator including a timer vernier
62. 5,122,792 Electronic time vernier circuit
63. 5,148,058 Logic circuits as for amorphous silicon self-scanned matrix arrays
64. 5,175,446 Demultiplexer including a three-state gate
65. 5,302,966 Active matrix electroluminescent display and method of operation
66. 5,337,068 Field-sequential display system utilizing a backlit LCD pixel array and ... forming an image
67. 5,587,329 Method for fabricating switching transistor having capacitive network proximate a drift region
68. 5,654,731 Shielded pixel structure for liquid crystal displays
69. 5,736,752 Active matrix electroluminescent display pixel element having a field shield ...
70. 5,932,892 High-voltage transistor
71. 5,952,789 AMOLED display pixel structure and data load/illuminate circuit therefore
72. 6,229,506 Active matrix light emitting diode pixel structure and concomitant method
73. 6,307,322 TFT circuitry with reduced sensitivity to variance in transistor threshold voltage
74. 6,348,906 Line Scanning Circuit for Dual-Mode Display
75. 6,370,019 Sealing of large Area Display Structures
76. 6,414,661 Method ... for calibrating display devices and automatically compensating ... over time
77. 6,417,825 Analog active matrix emissive display
78. 6,476,783 Contrast enhancement ... using a black matrix and lens array on outer surface of display
79. 6,606,247 Multi-feature-size electronic structures
80. 6,618,030 Active matrix light emitting diode pixel structure and concomitant method
81. 6,683,663 Web fabrication of devices
82. 6,816,380 Electronic devices with small functional elements supported on a carrier
83. 6,825,836 Bus arrangement for a driver of a matrix display
84. 6,863,219 Apparatuses and methods for forming electronic assemblies
85. 6,897,855 Tiled electronic display structure
86. 6,927,085 Web fabrication of devices
87. 6,933,848 System and method for disabling data on radio frequency identification tags
88. 6,942,155 Integrated circuits with persistent data storage
89. 6,952,157 System and method for concurrently addressing multiple RFID tags from a single reader
90. 6,980,184 Display devices and integrated circuits
91. 6,985,361 Electronic devices with small functional elements supported on a carrier
92. 6,988,667 Methods and apparatuses to identify devices
93. 7,172,910 Web fabrication of devices
94. 7,173,528 System & method for disabling data on RFID tags
95. 7,193,504 Methods & apparatus for identification
96. 7,221,258 Hierarchical electronic watermarks & method …
97. 7,260,882 Methods for making electronic devices w small …
98. 7,262,686 Methods & apparatus to identify devices
99. 7,333,001 Secure personal documents & method of use
100. 7,364,084 Persistent data storage
101. 7,377,445 Persistent data storage
Published Patent Applications
2004-0008123 System & method for tracking medical devices
2004-0246280 Image degradation correction in novel LCDs
2005-0078104 Tiled electronic display structure
2005-0081908 Method and apparatus for generation of electrical power from solar energy
2005-0121526 Battery activation circuit
2006-0087407 Master tags
2006-0208898 Compact omnidirectional RF system
2006-0208958 Compact omnidirectional RF system
2006-0250220 Accurate persistent nodes
2006-0250251 Semi-transparent RFID tags
2006-0255131 Smart tag activation
2006-0265181 Battery monitor
2007-0013484 Methods & apparatus for identification
2007-0018793 Ramped interrogation power levels
2007-0018828 System & method for disabling data on RFID tags
2007-0118309 Battery monitor
2007-0206701 RFID reader with digital waveform encoding …
2007-0206704 RFID reader with adaptive carrier cancellation
2007-0206705 RFID reader with adjustable filtering & adaptive backscatter processing
2007-0247884 Attribute Cache memory
2007-0256291 Methods for making electronic devices w small …
2007-0262851 Methods & apparatus to identify devices
2007-0279194 Methods & apparatus for identification
2008-0055223 Pixel circuits & method for driving pixels
2008-0062090 Pixel circuits & method for driving pixels
2008-0062091 Pixel circuits & method for driving pixels
2008-0065662 Compressed tag codes & mapping
1. 3,947,727 Protection circuit for insulated-gate field-effect transistors
2. 3,967,295 Input transient protection for integrated circuit element
3. 3,999,205 Rectifier structure for a semiconductor integrated circuit device
4. 4,037,114 Tri-state logic circuit
5. 4,039,858 Transition detector
6. 4,044,341 Memory array
7. 4,045,688 Power-on reset circuit
8. 4,061,962 Current mirror amplifier augmentation of regulator transistor current flow
9. 4,063,225 Memory cell and array
10. 4,075,690 Write enhancement circuit
11. 4,080,539 Level shift circuit
12. 4,107,556 Sense circuit employing complementary field effect transistors
13. 4,185,319 Non-volatile memory device
14. 4,208,730 Precharge circuit for memory array
15. 4,216,390 Level shift circuit
16. 4,236,199 Regulated high voltage power supply
17. 4,239,994 Asymmetrically precharged sense amplifier
18. 4,281,400 Circuit for reducing the loading effect of an insulated-gate IGFET on a signal source
19. 4,329,600 Overload protection circuit for output driver
20. 4,337,522 Memory circuit with means for compensating for inversion of stored data
21. 4,339,809 Noise protection circuits
22. 4,344,005 Power gated decoding
23. 4,354,255 Random access memory with volatile and non-volatile storage
24. 4,386,284 Pulse generating circuit using current source
25. 4,398,102 Gated parallel decoder
26. 4,405,996 Precharge with power conservation
27. 4,419,741 Read only memory (ROM) having high density memory array with on pitch decoder circuitry
28. 4,423,432 Apparatus for decoding multiple input lines
29. 4,434,381 Sense amplifiers
30. 4,442,447 Electrically alterable nonvolatile floating gate memory device
31. 4,450,562 Two level parity error correction system
32. 4,464,754 Memory system with redundancy for error avoidance
33. 4,464,755 Memory system with error detection and correction
34. 4,472,805 Memory system with error storage
35. 4,513,397 Electrically alterable, nonvolatile floating gate memory device
36. 4,527,081 Overshoot pre-driven semi-asynchronous driver
37. 4,558,240 Multi mode amplifier
38. 4,577,215 Dual word line, electrically alterable, nonvolatile floating gate memory device
39. 4,589,008 Apparatus for electrically joining the ends of substantially parallel semiconductor lines
40. 4,608,591 Electrically alterable programmable nonvolatile floating gate memory device
41. 4,612,466 High-speed output driver
42. 4,618,876 Electrically alterable, nonvolatile floating gate memory device
43. 4,738,514 Crystal variation compensation circuit for liquid crystal displays
44. 4,742,346 System for applying grey scale codes to the pixels of a display device
45. 4,760,557 Radiation hard memory cell circuit with high inverter impedance ratio
46. 4,766,430 Display device drive circuit
47. 4,828,365 Multicolor filter for producing purer white across a display device
48. 4,833,644 Memory cell circuit having radiation hardness
49. 4,872,002 Integrated matrix display circuitry
50. 4,903,094 Memory cell structure having radiation hardness
51. 4,926,236 Multilayer interconnect and method of forming same
52. 4,933,904 Dense EPROM having serially coupled floating gate transistors
53. 4,947,221 Memory cell for a dense EPROM
54. 4,963,860 Integrated matrix display circuitry
55. 4,965,646 Thin film transistor and crossover structure for liquid crystal displays
56. 4,968,119 High-density liquid-crystal active dot-matrix display structure
57. 4,989,061 Radiation hard memory cell structure with drain shielding
58. 5,076,667 High speed signal and power supply bussing for liquid crystal displays
59. 5,093,581 Circuitry for generating pulses of variable widths from binary input data
60. 5,105,187 Shift register for active matrix display devices
61. 5,122,676 Variable pulse width generator including a timer vernier
62. 5,122,792 Electronic time vernier circuit
63. 5,148,058 Logic circuits as for amorphous silicon self-scanned matrix arrays
64. 5,175,446 Demultiplexer including a three-state gate
65. 5,302,966 Active matrix electroluminescent display and method of operation
66. 5,337,068 Field-sequential display system utilizing a backlit LCD pixel array and ... forming an image
67. 5,587,329 Method for fabricating switching transistor having capacitive network proximate a drift region
68. 5,654,731 Shielded pixel structure for liquid crystal displays
69. 5,736,752 Active matrix electroluminescent display pixel element having a field shield ...
70. 5,932,892 High-voltage transistor
71. 5,952,789 AMOLED display pixel structure and data load/illuminate circuit therefore
72. 6,229,506 Active matrix light emitting diode pixel structure and concomitant method
73. 6,307,322 TFT circuitry with reduced sensitivity to variance in transistor threshold voltage
74. 6,348,906 Line Scanning Circuit for Dual-Mode Display
75. 6,370,019 Sealing of large Area Display Structures
76. 6,414,661 Method ... for calibrating display devices and automatically compensating ... over time
77. 6,417,825 Analog active matrix emissive display
78. 6,476,783 Contrast enhancement ... using a black matrix and lens array on outer surface of display
79. 6,606,247 Multi-feature-size electronic structures
80. 6,618,030 Active matrix light emitting diode pixel structure and concomitant method
81. 6,683,663 Web fabrication of devices
82. 6,816,380 Electronic devices with small functional elements supported on a carrier
83. 6,825,836 Bus arrangement for a driver of a matrix display
84. 6,863,219 Apparatuses and methods for forming electronic assemblies
85. 6,897,855 Tiled electronic display structure
86. 6,927,085 Web fabrication of devices
87. 6,933,848 System and method for disabling data on radio frequency identification tags
88. 6,942,155 Integrated circuits with persistent data storage
89. 6,952,157 System and method for concurrently addressing multiple RFID tags from a single reader
90. 6,980,184 Display devices and integrated circuits
91. 6,985,361 Electronic devices with small functional elements supported on a carrier
92. 6,988,667 Methods and apparatuses to identify devices
93. 7,172,910 Web fabrication of devices
94. 7,173,528 System & method for disabling data on RFID tags
95. 7,193,504 Methods & apparatus for identification
96. 7,221,258 Hierarchical electronic watermarks & method …
97. 7,260,882 Methods for making electronic devices w small …
98. 7,262,686 Methods & apparatus to identify devices
99. 7,333,001 Secure personal documents & method of use
100. 7,364,084 Persistent data storage
101. 7,377,445 Persistent data storage
Published Patent Applications
2004-0008123 System & method for tracking medical devices
2004-0246280 Image degradation correction in novel LCDs
2005-0078104 Tiled electronic display structure
2005-0081908 Method and apparatus for generation of electrical power from solar energy
2005-0121526 Battery activation circuit
2006-0087407 Master tags
2006-0208898 Compact omnidirectional RF system
2006-0208958 Compact omnidirectional RF system
2006-0250220 Accurate persistent nodes
2006-0250251 Semi-transparent RFID tags
2006-0255131 Smart tag activation
2006-0265181 Battery monitor
2007-0013484 Methods & apparatus for identification
2007-0018793 Ramped interrogation power levels
2007-0018828 System & method for disabling data on RFID tags
2007-0118309 Battery monitor
2007-0206701 RFID reader with digital waveform encoding …
2007-0206704 RFID reader with adaptive carrier cancellation
2007-0206705 RFID reader with adjustable filtering & adaptive backscatter processing
2007-0247884 Attribute Cache memory
2007-0256291 Methods for making electronic devices w small …
2007-0262851 Methods & apparatus to identify devices
2007-0279194 Methods & apparatus for identification
2008-0055223 Pixel circuits & method for driving pixels
2008-0062090 Pixel circuits & method for driving pixels
2008-0062091 Pixel circuits & method for driving pixels
2008-0065662 Compressed tag codes & mapping
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