David Hoke
24Patents
8h-index
25Co-inventors
75Inventor score
Filing activity: Dec 12, 1986 → Mar 19, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4775616A | Cyan dye-forming couplers and photographic materials containing same | Physics | 26 | Expired |
| US5457210A | Intermediates for the preparation of pyrazoloazole photographic couplers, processes of making and using them | Chemistry; Metallurgy | 22 | Expired |
| US4849328A | Cyan dye-forming couplers and photographic materials containing same | Physics | 21 | Expired |
| US5447819A | Photographic element containing high dye-yield couplers having improved reactivity | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5008180A | Photographic recording material containing a cyan dye-forming coupler | Chemistry; Metallurgy | 19 | Expired |
| US5457004A | Photographic element containing a high dye-yield coupler with methine dye chromophore | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5045442A | Photographic materials with novel cyan dye forming couplers | Chemistry; Metallurgy | 16 | Expired |
| US4923791A | Photographic recording material containing a cyan dye-forming coupler | Chemistry; Metallurgy | 8 | Expired |
| US5681691A | Photographic element containing an improved pyrazolotriazole coupler | Physics | 7 | Expired |
| US6132944A | Photographic element containing high dye-yield couplers | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5985532A | Photographic element containing an improved pyrozolotriazole coupler | Physics | 3 | Expired |
| US5830632A | Photographic element containing dispersions of high dye-yield couplers having improved photographic activity | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5256529A | Silver halide photographic materials containing sulfonamido-solubilized pyrazolotriazole couplers | Emerging Cross-Sectional Technologies | 3 | Expired |
| US5565572A | Intermediates for the preparation of pyrazoloazole photographic couplers, processes of making and using them | Chemistry; Metallurgy | 3 | Expired |
| US5725999A | Methine yellow density correction dyes for color negative films with magnetic recording layers | Emerging Cross-Sectional Technologies | 2 | Expired |
| US5441856A | Photographic elements containing indoaniline dummy dyes | Physics | 2 | Expired |
| US5834166A | Photographic element containing a particular cyan dye-forming coupler | Physics | 1 | Expired |
| US6120981A | Photographic element containing sulfon amido compounds that boost dye formation from photographic couplers | Physics | 1 | Expired |
| US5811228A | Density correction dyes for color negative films with magnetic recording layers | Emerging Cross-Sectional Technologies | 1 | Expired |
| US4753871A | Cyan dye-forming couplers and photographic materials containing same | Physics | 1 | Expired |
| US6124503A | Processes for making and using alkylaminoarylcarbonyl compounds | Chemistry; Metallurgy | 0 | Expired |
| US9810248B2 | Control fluid power apparatus and related methods | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US5981760A | Intermediates for the preparation of pyrazoloazole photographic couplers, processes of making and adjusting them | Chemistry; Metallurgy | 0 | Expired |
| US6172260A | Preparation of high dye-yield couplers and intermediates useful therein | Physics | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.