David T. Southby
62Patents
9h-index
79Co-inventors
81Inventor score
Filing activity: Oct 18, 1979 → Dec 27, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4482626A | Photographic color developer compositions | Physics | 36 | Expired |
| US5447819A | Photographic element containing high dye-yield couplers having improved reactivity | Emerging Cross-Sectional Technologies | 19 | Expired |
| US5457004A | Photographic element containing a high dye-yield coupler with methine dye chromophore | Emerging Cross-Sectional Technologies | 19 | Expired |
| US4912025A | Photographic recording material for accelerated development | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5354650A | Photographic elements containing release compounds | Emerging Cross-Sectional Technologies | 15 | Expired |
| US4256881A | Blocked benzotriazole compounds as development restrainer precursors | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4859578A | Photographic recording material providing improved granularity properties | Emerging Cross-Sectional Technologies | 14 | Expired |
| US4255510A | Development restrainer precursors for photographic elements | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5256525A | Blocked incorporated developers in a photographic element | Emerging Cross-Sectional Technologies | 9 | Expired |
| US6827768B2 | Ink jet printing process | Chemistry; Metallurgy | 9 | Expired |
| US5034311A | Photographic elements containing release compounds I | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5470688A | Heat development of elements containing methine-dye releasing couplers | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6855193B2 | Ink jet ink composition | Chemistry; Metallurgy | 8 | Expired |
| US5210007A | Image intensification chemistry with blocked incorporated developers | Emerging Cross-Sectional Technologies | 8 | Expired |
| US6929905B2 | Method of processing a photographic element containing electron transfer agent releasing couplers | Physics | 7 | Expired |
| US5283163A | Photographic material and process employing a development inhibitor releasing compound containing a fluorinated carbon alpha to an amide group | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8814337B2 | Inkjet ink sets for high speed printing on plain papers and glossy media | Chemistry; Metallurgy | 6 | Active |
| US5455140A | Methine-dye releasing couplers for heat image separation systems | Physics | 6 | Expired |
| US5455141A | Photographic elements containing blocked dye moieties | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5283162A | Photographic elements containing sulfite releasable release compounds | Emerging Cross-Sectional Technologies | 5 | Expired |
| US6110657A | Photographic recording material for accelerated development | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5356750A | Dye releasing couplers for heat image separation systems | Physics | 4 | Expired |
| US6242170A | Color photographic element containing a fragmentable electron donor in combination with a one equivalent coupler for improved photographic response | Emerging Cross-Sectional Technologies | 4 | Expired |
| US6245497A | Performance of high speed emulsions for color film | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5998121A | Photographic element with silver halide emulsion layer of low developability and having an associated high dye-yield coupler | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.