Issued Patents All Time
Showing 26–49 of 49 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6165683 | Metallized azo-ether dyes for optical recording layers | Derek D. Chapman, Csaba A. Kovacs | 2000-12-26 |
| 6153364 | Photographic processing methods using compositions containing stain reducing agent | Harry J. Price, Mary E. Craver | 2000-11-28 |
| 6153365 | Photographic processing compositions containing stain reducing agent | Mary E. Craver, Harry J. Price | 2000-11-28 |
| 5922429 | Optical recording elements having recording layers containing mixtures of low k metallized formazan and cyanine dyes | Derek D. Chapman, Michael P. Cunningham | 1999-07-13 |
| 5922504 | Optical recording elements having recording layers containing mixtures of no k metallized formazan and cyanine dyes | Derek D. Chapman, Michael P. Cunningham, James C. Fleming | 1999-07-13 |
| 5876821 | Tetra dye mixed with another dye or dyes for optical recording elements | Derek D. Chapman, James C. Fleming, Csaba A. Kovacs | 1999-03-02 |
| 5824768 | Polymeric dyes for optical recording layers and elements | Elizabeth G. Burns, Csaba A. Kovacs, Derek D. Chapman | 1998-10-20 |
| 5821346 | Metallized carbamoylazo dyes | Derek D. Chapman, Csaba A. Kovacs | 1998-10-13 |
| 5821029 | Optical recording elements containing mixtures of metallized carbamoylazo and cyanine dyes | Derek D. Chapman, Csaba A. Kovacs | 1998-10-13 |
| 5786124 | Optical recording elements containing metallized carbamoylazo dyes | Derek D. Chapman, Csaba A. Kovacs | 1998-07-28 |
| 5786123 | Optical recording elements comprising a polymeric dye | Elizabeth G. Burns, Csaba A. Kovacs, Derek D. Chapman | 1998-07-28 |
| 5773193 | Optical recording layers containing no k metallized formazan dyes mixed with symmetrical and unsymmetrical cyanine dyes | Derek D. Chapman, Michael P. Cunningham | 1998-06-30 |
| 5731054 | Mixtures of low K metallized formazan dyes with symmetrical and unsymmetrical cyanine dyes | Derek D. Chapman, Michael P. Cunningham | 1998-03-24 |
| 5705323 | Heat bleachable antihalation composition, elements containing same and method of use | Robert James Perry, Paul A. Zielinski | 1998-01-06 |
| 5695843 | Mixtures of symmetrical and unsymmetrical nickel formazan dyes | Derek D. Chapman | 1997-12-09 |
| 5693589 | Thermal imaging recording element | Robert James Perry, Paul A. Zielinski | 1997-12-02 |
| 5672562 | Thermal recording element | Robert James Perry, Paul A. Zielinski | 1997-09-30 |
| 5652091 | Heat bleachable elements having polymeric acid layer adjacent heat bleachable antihalation layer | Robert James Perry | 1997-07-29 |
| 5645910 | Formazan-cyanine copolymers dyes for optical recording layers and elements | Elizabeth G. Burns, Csaba A. Kovacs | 1997-07-08 |
| 5500325 | Dye mixtures for optical recording layers | Derek D. Chapman, Csaba A. Kovacs | 1996-03-19 |
| 4927927 | Fluorescent dyes and biological and analytical uses thereof | Chin H. Chen | 1990-05-22 |
| 4812393 | Fluorescent dyes and biological and analytical uses thereof | Chin H. Chen | 1989-03-14 |
| 4774181 | Imaging element containing fluorescent dye-releasing coupler compound | Nair N. Ravindran | 1988-09-27 |
| 4769292 | Electroluminescent device with modified thin film luminescent zone | Ching W. Tang, Chin H. Chen | 1988-09-06 |