Jiro Tsukahara
36Patents
9h-index
61Co-inventors
78Inventor score
Filing activity: Feb 24, 1987 → Sep 24, 2020
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5143824A | Silver halide color photographic material containing cyan dye-forming coupler | Physics | 52 | Expired |
| US5976731A | Non-aqueous lithium ion secondary battery | Emerging Cross-Sectional Technologies | 29 | Expired |
| US4735884A | Light-sensitive material containing silver halide, reducing agent and polymerizable compound | Physics | 20 | Expired |
| US6048637A | Nonaqueous secondary battery | Emerging Cross-Sectional Technologies | 18 | Expired |
| US6156459A | Nonaqueous-electrolytic solution secondary battery | Emerging Cross-Sectional Technologies | 17 | Expired |
| US5183729A | Method for forming color image | Physics | 16 | Expired |
| US4772531A | Light-sensitive material containing silver halide, reducing agent and polymerizable compound | Emerging Cross-Sectional Technologies | 16 | Expired |
| US4952474A | Light-sensitive material containing silver halide, a disulfonamido reducing agent and polymerizable compound | Physics | 13 | Expired |
| US5830627A | Silver halide color photograph material and method for forming image using the same | Emerging Cross-Sectional Technologies | 11 | Expired |
| US9670370B2 | Functional film manufacturing method and functional film | Emerging Cross-Sectional Technologies | 9 | Active |
| US4981965A | Process for formation of base | Physics | 8 | Expired |
| US5164289A | Dye forming coupler and silver halide color photographic material containing the same and method for forming color image | Physics | 8 | Expired |
| US5827638A | Silver halide photographic light-sensitive material and image formation method using the same | Emerging Cross-Sectional Technologies | 7 | Expired |
| US5316888A | Color diffusion transfer photographic film unit | Physics | 7 | Expired |
| US5827637A | Silver halide light-sensitive material and image formation method using the same | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5498505A | Dye fixing element | Emerging Cross-Sectional Technologies | 6 | Expired |
| US8329306B2 | Barrier laminate, gas barrier film, and device using the same | Emerging Cross-Sectional Technologies | 5 | Active |
| US5192651A | Silver halide color photographic photosensitive materials containing at least two types of cyan dye forming couplers | Physics | 5 | Expired |
| US8637147B2 | Barrier laminate, gas barrier film and device using the same | Emerging Cross-Sectional Technologies | 4 | Active |
| US5484683A | Dye fixing element with hydrazine | Physics | 3 | Expired |
| US8033882B2 | Light-emitting device or display device, and method for producing them | Emerging Cross-Sectional Technologies | 3 | Active |
| US8133577B2 | Silicon-nitrogen compound film, and gas-barrier film and thin-film device using the silicon-nitrogen compound film | Emerging Cross-Sectional Technologies | 3 | Active |
| US5064751A | Method of processing a silver halide color photographic material and a color developer where the developer contains a hydrazine compound | Physics | 3 | Expired |
| US5447818A | Color diffusion transfer film unit | Emerging Cross-Sectional Technologies | 2 | Expired |
| US8119248B2 | Organic-inorganic hybrid free standing film, and its production method | Emerging Cross-Sectional Technologies | 2 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.