William C. Hoffman
24Patents
11h-index
22Co-inventors
75Inventor score
Filing activity: May 2, 1975 → Aug 21, 2013
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4090219A | Liquid crystal sequential color display | Physics | 149 | Expired |
| US5617154A | Light filtering contact lens | Physics | 90 | Expired |
| US4006968A | Liquid crystal dot color display | Electricity | 80 | Expired |
| US4349817A | Liquid crystal display system using fiber optic faceplates | Physics | 66 | Expired |
| US5846457A | Light filtering contact lens method | Physics | 40 | Expired |
| US4252397A | Insulation piercing electric connector bonded to electric conductor | Emerging Cross-Sectional Technologies | 37 | Expired |
| US4344668A | Fiber optic light traps for electro-optical display devices | Physics | 31 | Expired |
| US5517867A | Liquid extraction apparatus | Physics | 23 | Expired |
| US4733959A | Apparatus and method for tinting hydrophilic contact lenses | Physics | 21 | Expired |
| US4917371A | Automatic document feeder and registration system therefor | Physics | 16 | Expired |
| US4809969A | Automatic document feeder and registration system therefor | Physics | 13 | Expired |
| US4839200A | Enhanced resolution ink jet printing | Emerging Cross-Sectional Technologies | 11 | Expired |
| US4621799A | Automatic document feeder and registration system therefor | Physics | 10 | Expired |
| US5337640A | Cutter blade assembly | Emerging Cross-Sectional Technologies | 10 | Expired |
| US5440058A | Method for separating compounds in process streams | Human Necessities | 7 | Expired |
| US8153726B2 | Highly oxygen permeable rigid contact lenses from polyacetylenes | Physics | 7 | Active |
| US4725053A | Automatic document feeder and registration system therefor | Physics | 6 | Expired |
| US9174902B2 | Removal of organic salts from bio-derived glycol products of polyol hydrogenolysis | Emerging Cross-Sectional Technologies | 2 | Active |
| US8846205B2 | Hybrid strategies for reducing leaching of metal biocides from biodegradable substrates | Emerging Cross-Sectional Technologies | 0 | Active |
| US7740692B2 | Wood preservative composition | Performing Operations; Transporting | 0 | Active |
| US8853459B2 | Decolorization of amines | Chemistry; Metallurgy | 0 | Active |
| US8105635B2 | Post-impregnation treatments to improve distribution of metal biocides in an impregnated substrate | Performing Operations; Transporting | 0 | Active |
| US8124808B2 | Transalkoxylation of nucleophilic compounds | Chemistry; Metallurgy | 0 | Active |
| US10399064B2 | Rhenium recovery from used reductive amination catalysts | Emerging Cross-Sectional Technologies | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.