Issued Patents All Time
Showing 1–25 of 26 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7654086 | Air induction system having bypass flow control | Weidong Gong, Martin L. Willi, Scott B. Fiveland | 2010-02-02 |
| 7468085 | System and method for cleaning a filter | — | 2008-12-23 |
| 6790585 | Method for developing a high contrast photographic material containing a polyhydrazide nucleating agent | Jacques Roussilhe, Siu C. Tsoi, Llewellyn J. Leyshon | 2004-09-14 |
| 6713226 | High contrast photographic element containing a polyhydrazide nucleating agent | Llewellyn J. Leyshon | 2004-03-30 |
| 6541191 | Photographic processing solutions | Peter J. Twist | 2003-04-01 |
| 6455242 | Color photographic element containing speed improving compound | Philip A. Allway, Bernard A. Clark, Louis E. Friedrich, James A. Friday, Stephen P. Singer +1 more | 2002-09-24 |
| 6349737 | Bursting disc assembly retaining ring with a clover leaf cutting pattern and projection | G. Scott Muddiman | 2002-02-26 |
| 6319660 | Color photographic element containing speed improving compound | Philip A. Allway, Bernard A. Clark, Louis E. Friedrich, James A. Friday, Stephen P. Singer +1 more | 2001-11-20 |
| 6245480 | High contrast photographic element containing a novel nucleator | Judith A. Bogie, Philip J. Coldrick, Llewellyn J. Leyshon | 2001-06-12 |
| 6228566 | High contrast photographic element containing a novel nucleator | Philip J. Coldrick, Rebecca Glen, Dawn J. Jenkins | 2001-05-08 |
| 6220269 | Bursting disc assembly retaining ring with a clover leaf cutting pattern and projection | G. Scott Muddiman | 2001-04-24 |
| 6200741 | Photographic addenda | Paul L. Stanley | 2001-03-13 |
| 6143462 | High contrast photographic element containing a novel nucleator | Philip J. Coldrick, Rebecca Glen, Dawn J. Jenkins | 2000-11-07 |
| 6071683 | Image dye-forming couplers and photographic elements containing them | Danuta Gibson, Llewellyn J. Leyshon, Brian Thomas | 2000-06-06 |
| 5994037 | Method for rapid photographic processing with maintained color balance using diffusible photochemicals | Peter J. Twist | 1999-11-30 |
| 5869222 | Photographic processing solutions | Peter J. Twist | 1999-02-09 |
| 5811579 | Method of synthesizing a 2-substituted nitrogen-containing compound | — | 1998-09-22 |
| 5411848 | Photographic color couplers and photographic materials containing them | Danuta Gibson | 1995-05-02 |
| 5284739 | Photographic silver halide color material having incorporated therein a ballasted heterocyclic-sulphonhydrazide color developing agent | David Clarke, Paul L. Stanley, Nigel E. Milner | 1994-02-08 |
| 4980275 | Photographic material and process comprising a dye stabilizer | — | 1990-12-25 |
| 4883410 | Fuel supply systems | Peter Taylor | 1989-11-28 |
| 4824771 | Photographic acetanilide couplers with novel ballast group and photographic elements containing them | Paul R. Buckland | 1989-04-25 |
| 4794072 | Phosphate ester stabilizers | — | 1988-12-27 |
| 4782011 | Bisphenol derivative stabilizers | Nigel E. Milner, Llewellyn J. Leyshon | 1988-11-01 |
| 4749645 | Heterocyclic phosphorus compound stabilizers | Llewellyn J. Leyshon | 1988-06-07 |