John M. Buchanan
24Patents
10h-index
20Co-inventors
75Inventor score
Filing activity: Jun 18, 1986 → Sep 14, 2006
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5460924A | Photographic peracid bleaches with ferric 2-pyridinecarboxylate and 2,6-pyridinecarboxylate catalysts | Emerging Cross-Sectional Technologies | 37 | Expired |
| US5019492A | Photographic element and process comprising a blocked photographically useful compound | Emerging Cross-Sectional Technologies | 34 | Expired |
| US5536625A | Photographic peracid bleaches with ferric 2-pyridinecarboxylate and 2,6-pyridinecarboxylate catalysts | Emerging Cross-Sectional Technologies | 32 | Expired |
| US5840470A | Rapid image presentation method employing silver bromide tabular grain photographic elements | Emerging Cross-Sectional Technologies | 21 | Expired |
| US4857440A | Photographic material and process (B) | Emerging Cross-Sectional Technologies | 18 | Expired |
| US5058327A | Tubing and fitting stripper | Performing Operations; Transporting | 16 | Expired |
| US5698379A | Rapid image presentation method employing silver chloride tabular grain photographic elements | Emerging Cross-Sectional Technologies | 16 | Expired |
| US5521056A | Photographic peracid bleaching composition and processing method using ternary iron carboxylate complexes as catalysts in peracid bleaching solutions | Emerging Cross-Sectional Technologies | 13 | Expired |
| US5747228A | Method for providing a color display image using duplitized color silver halide photographic elements | Emerging Cross-Sectional Technologies | 12 | Expired |
| US4847185A | Photographic material and process (A) | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5055385A | Photographic elements containing release compounds-II | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5034311A | Photographic elements containing release compounds I | Emerging Cross-Sectional Technologies | 8 | Expired |
| US4747823A | Cannulae | Human Necessities | 8 | Expired |
| US5242783A | Photographic material and process | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5464728A | Method of bleaching and fixing a color photographic element containing high iodine emulsions | Emerging Cross-Sectional Technologies | 8 | Expired |
| US5582958A | Photographic bleaching composition and processing method using ternary iron carboxylate complexes as bleaching agents | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5744288A | Method for rapid processing of duplitized color silver halide photographic elements | Emerging Cross-Sectional Technologies | 6 | Expired |
| US5618656A | Method of processing originating and display photographic elements using common processing solutions | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5451491A | Method of bleaching and fixing a color photographic element using a peracid bleach and a low ammonium fixer | Emerging Cross-Sectional Technologies | 5 | Expired |
| US5443943A | Method of processing originating photographic elements containing tabular silver chloride grains bounded by {100} faces | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5773202A | Method for processing color photographic films using a peroxide bleaching composition | Emerging Cross-Sectional Technologies | 4 | Expired |
| US5783376A | Sulfo-substituted carboxylates as buffers for photographic bleaches and bleach-fixes | Physics | 3 | Expired |
| US8696903B2 | High-pressure tubing | Physics | 0 | Active |
| US5837433A | Method for providing a color display image using duplitized color silver halide photographic elements | Emerging Cross-Sectional Technologies | 0 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.