Hisao Yokokura
29Patents
11h-index
48Co-inventors
75Inventor score
Filing activity: Sep 8, 1976 → Feb 21, 2007
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4564694A | Colorless liquid crystalline compounds | Chemistry; Metallurgy | 61 | Expired |
| US4634228A | Ferroelectric liquid crystal cell with rubbed polyimide alignment layer | Emerging Cross-Sectional Technologies | 40 | Expired |
| US5067797A | Liquid crystal display cell and process for producing the same | Physics | 32 | Expired |
| US5220447A | Liquid crystal display device and phase plate therefor | Physics | 25 | Expired |
| US5928733A | Active-matrix liquid crystal display | Physics | 21 | Expired |
| US4381886A | Liquid crystal display element | Chemistry; Metallurgy | 20 | Expired |
| US4759614A | Ferroelectric liquid crystal element with particular alignment film and a method for manufacturing the same | Chemistry; Metallurgy | 18 | Expired |
| US4781439A | Liquid crystal polyimide alignment free of scattering domains | Chemistry; Metallurgy | 14 | Expired |
| US6222602A | Liquid crystal display apparatus and a method for manufacturing the same | Physics | 13 | Expired |
| US6242060A | Active-matrix liquid crystal display | Physics | 11 | Expired |
| US4584120A | Liquid crystal compound and liquid crystal composition | Chemistry; Metallurgy | 11 | Expired |
| US6047098A | Plastic optical waveguide and optical switch using same | Physics | 10 | Expired |
| US4278326A | Liquid crystal display element | Physics | 8 | Expired |
| US6682783B1 | Active matrix type liquid crystal display apparatus | Physics | 8 | Expired |
| US6130737A | Lateral electric field switching mode liquid crystal display apparatus without black stains | Physics | 6 | Expired |
| US6756089B2 | Active-matrix liquid crystal display | Physics | 6 | Expired |
| US4694098A | Colorless liquid crystalline compounds | Chemistry; Metallurgy | 6 | Expired |
| US6236441A | Liquid crystal display apparatus and a method for manufacturing the same | Physics | 5 | Expired |
| US4645305A | Liquid-crystal compound, liquid crystal composition and liquid crystal display device | Chemistry; Metallurgy | 5 | Expired |
| US5020883A | Ferroelectric liquid crystal device | Chemistry; Metallurgy | 5 | Expired |
| US7615260B2 | Active-matrix liquid crystal display | Physics | 4 | Expired |
| US4653866A | Liquid crystal compound and liquid crystal composition including the same | Chemistry; Metallurgy | 4 | Expired |
| US4076646A | Liquid crystal composition for field effect display devices | Chemistry; Metallurgy | 2 | Expired |
| US7189439B2 | Active matrix type liquid crystal display apparatus | Physics | 1 | Expired |
| US7790248B2 | Active matrix type liquid crystal display apparatus | Physics | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.