Richard L. Parton
50Patents
11h-index
55Co-inventors
81Inventor score
Filing activity: May 11, 1983 → Dec 5, 2003
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4871656A | Photographic silver halide elements containing infrared filter dyes | Physics | 26 | Expired |
| US4471044A | Silver halide emulsions and photographic elements containing adsorbable alkynyl substituted heterocyclic quaternary ammonium salts | Physics | 20 | Expired |
| US6143486A | Photographic material having enhanced light absorption | Emerging Cross-Sectional Technologies | 19 | Expired |
| US6165703A | Color photographic material having enhanced light absorption | Physics | 18 | Expired |
| US4933269A | Photographic silver halide element containing infrared filter dyes | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5061618A | Infrared-sensitive photographic element | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6355386B1 | Liquid crystalline filter dyes for imaging elements | Physics | 16 | Expired |
| US4876181A | Photographic elements containing infrared filter dyes | Physics | 16 | Expired |
| US6331385A | Photographic material having enhanced light absorption | Physics | 15 | Expired |
| US6361932B1 | Photographic material having enhanced light absorption | Physics | 12 | Expired |
| US5013642A | Photographic element | Emerging Cross-Sectional Technologies | 11 | Expired |
| US6180295A | Liquid crystalline filter dyes for imaging elements | Physics | 11 | Expired |
| US4459347A | Adsorbable arylhydrazides and applications thereof to silver halide photography | Physics | 10 | Expired |
| US5298379A | Radiation sensitive element with absorber dye to enhance spectral sensitivity range | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5418118A | Silver halide color photographic element with improved high density contrast and bright low density colors | Physics | 10 | Expired |
| US5091298A | Sensitizing dyes for photographic materials | Chemistry; Metallurgy | 9 | Expired |
| US5744287A | Photographic silver halide media for digital optical recording | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6312883A | Photographic material having enhanced light absorption and low dye stain | Physics | 9 | Expired |
| US5108882A | Infrared-sensitive photographic element containing at least two photosensitive layers | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6558893B1 | Photographic material having improved color reproduction | Physics | 8 | Expired |
| US4975362A | Infrared sensitizing dye for photographic element | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6620581B1 | Photographic material having enhanced light absorption | Physics | 7 | Expired |
| US5135845A | Sensitizing dye for photographic materials | Physics | 6 | Expired |
| US6329133A | Color photographic material having enhanced light absorption | Physics | 6 | Expired |
| US5316904A | Amide substituted dye compounds and silver halide photographic elements containing such dyes | Physics | 6 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.