William R. Schleigh
8Patents
5h-index
13Co-inventors
52Inventor score
Filing activity: Aug 6, 1990 → Jan 15, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5561037A | Photographic elements containing magenta dye forming couplers and fade reducing compounds | Physics | 17 | Expired |
| US5447830A | 3-anilino pyrazolone magenta couplers and process | Physics | 8 | Expired |
| US5484696A | Photographic elements containing 2-equivalent pyrazolone magenta dye forming couplers and fade reducing compounds | Physics | 6 | Expired |
| US5972574A | Photographic element containing magenta coupler having improved manufacturability and dye light stability | Physics | 5 | Expired |
| US5118695A | 1-hydroxyindole fungicides | Chemistry; Metallurgy | 5 | Expired |
| US5491054A | Photographic elements containing 2-equivalent pyrazolone magenta dye forming couplers and stabilizing compounds | Physics | 4 | Expired |
| US5605787A | 3-anilino pyrazolone magenta couplers and process | Physics | 4 | Expired |
| US5183894A | 2-substituted-1-hydroxyindoles | Chemistry; Metallurgy | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.