Issued Patents All Time
Showing 1–20 of 20 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6482950 | Squarylium compounds, and processes and intermediates for the synthesis of these compounds | Paulina P. Garcia, John Lee, John Marshall, Donald A. McGowan, Thomas K. Spencer +3 more | 2002-11-19 |
| 5977351 | Benzpyrylium squarylium and croconylium dyes, and processes for their preparation and use | Peter K. Chu, Serajul Haque, Socorro M. Ramos, Robert P. Short, Stephen G. Stroud +2 more | 1999-11-02 |
| 5919950 | Squarylium compounds, and processes and intermediates for the synthesis of these compounds | Paulina P. Garcia, John Lee, John Marshall, Donald A. McGowan, Thomas K. Spencer +3 more | 1999-07-06 |
| 5667943 | Process for thermochemical generation of acid and for thermal imaging, and imaging medium for use therein | Roger A. Boggs, Jurgen M. Grasshoff, Mark R. Mischke, Stephen J. Telfer, David P. Waller +1 more | 1997-09-16 |
| 5627014 | Benzpyrylium squarylium and croconylium dyes, and processes for their preparation and use | Peter K. Chu, Serajul Haque, Socorro M. Ramos, Robert P. Short, Stephen G. Stroud +2 more | 1997-05-06 |
| 5578424 | Process for generation of unbuffered super-acid and for imaging | Jurgen M. Grasshoff, John Marshall, Richard A. Minns, Lloyd D. Taylor, Stephen J. Telfer | 1996-11-26 |
| 5534388 | Process for generation of acid and for imaging, and imaging medium for use therein | Jurgen M. Grasshoff, John Marshall, Richard A. Minns, Mark R. Mischke, Lloyd D. Taylor +1 more | 1996-07-09 |
| 5534393 | Process for thermochemical generation of acid and for thermal imaging | Roger A. Boggs, Jurgen M. Grasshoff, Mark R. Mischke, Stephen J. Telfer, David P. Waller +1 more | 1996-07-09 |
| 5453345 | Imaging medium | Jurgen M. Grasshoff, John Marshall, Richard A. Minns, Lloyd D. Taylor, Stephen J. Telfer | 1995-09-26 |
| 5445917 | Imaging medium | Jurgen M. Grasshoff, John Marshall, Richard A. Minns, Mark R. Mischke, Lloyd D. Taylor +1 more | 1995-08-29 |
| 5405976 | Benzpyrylium squarylium and croconylium dyes, and processes for their preparation and use | Stephen J. Telfer, Robert P. Short, Stephen G. Stroud, Socorro M. Ramos, Michael J. Zuraw | 1995-04-11 |
| 5401619 | Process for thermochemical generation of acid and for thermal imaging, and imaging medium for use therein | Roger A. Boggs, Jurgen M. Grasshoff, Mark R. Mischke, Stephen J. Telfer, David P. Waller +1 more | 1995-03-28 |
| 5395736 | Process for generation of acid and for imaging, and imaging medium for use therein | Jurgen M. Grasshoff, John Marshall, Richard A. Minns, Mark R. Mischke, Lloyd D. Taylor +1 more | 1995-03-07 |
| 5278031 | Process for thermochemical generation of squaric acid and for thermal imaging, and imaging medium for use therein | Roger A. Boggs, Jurgen M. Grasshoff, Mark R. Mischke, Stephen J. Telfer, David P. Waller +1 more | 1994-01-11 |
| 4847383 | Photographic reagent tetrazoles | James R. Bartels-Keith, Roger A. Boggs, Nancy M. Sofen | 1989-07-11 |
| 4713313 | Photographic system and novel compounds | James R. Bartels-Keith, Lloyd D. Taylor | 1987-12-15 |
| 4526965 | Uracil derivatives of thio- and selenourea compounds | James R. Bartels-Keith | 1985-07-02 |
| 4503139 | Photographic products and processes and novel compounds | James R. Bartels-Keith, Roger A. Boggs, Nancy M. Sofen | 1985-03-05 |
| 4442290 | Development restrainer release compounds | James R. Bartels-Keith | 1984-04-10 |
| 4350754 | Blocked development restrainers | James R. Bartels-Keith | 1982-09-21 |