Kenichi Ishihara
22Patents
8h-index
38Co-inventors
75Inventor score
Filing activity: Nov 21, 1990 → Jun 3, 2021
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5422687A | Contact lens wherein central correction region has a center 0.2-2.4mm offset from lens geometric center and a diameter of 0.8-3.5mm | Physics | 62 | Expired |
| US6706843B1 | Method for separating and recovering dimethyl terephthalate and ethylene glycol from polyester waste | Emerging Cross-Sectional Technologies | 50 | Expired |
| US6315929A | Mold assembly for forming ophthalmic lens, method of producing the same, and method of producing ophthalmic lens using the mold assembly | Emerging Cross-Sectional Technologies | 38 | Expired |
| US6857744B2 | Method of marking ophhalmic lens by using laser radiation of femtosecond pulse width | Performing Operations; Transporting | 32 | Expired |
| US5097134A | Scanning electron microscope | Electricity | 16 | Expired |
| US6257547A | Mold assembly for forming ophthalmic lens | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6997554B2 | Method of marking ophthalmic lens by using laser radiation | Performing Operations; Transporting | 13 | Expired |
| US5397511A | Method of producing intraocular lens formed from polymide powder | Performing Operations; Transporting | 9 | Expired |
| US7078440B2 | Dimethyl terephthalate composition and process for producing the same | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6772378B1 | Dummy error addition circuit | Electricity | 4 | Expired |
| US7544762B2 | Catalyst for preparation of polyester and process for preparing polyester using the catalyst | Chemistry; Metallurgy | 3 | Expired |
| US7392599B2 | Dummy substrate processing method with chemical resistant resin layer coating plate surface | Emerging Cross-Sectional Technologies | 3 | Expired |
| US11346291B2 | Throttle valve device | Mechanical Engineering; Lighting; Heating | 2 | Active |
| US8950847B2 | Recording apparatus | Performing Operations; Transporting | 2 | Active |
| US11401872B2 | Throttle device and method for manufacturing throttle device | Mechanical Engineering; Lighting; Heating | 1 | Active |
| US8556363B2 | Liquid ejecting apparatus | Performing Operations; Transporting | 1 | Active |
| US7189797B2 | Process for producing poly(ethylene-aromatic dicarboxylate ester) resin and resin product | Emerging Cross-Sectional Technologies | 0 | Expired |
| US8511772B2 | Printing device and printing method | Performing Operations; Transporting | 0 | Active |
| US11867309B2 | Throttle valve device and method for magnetizing the same | Mechanical Engineering; Lighting; Heating | 0 | Active |
| US7193449B2 | Method and apparatus for generating multi-phase signal | Electricity | 0 | Expired |
| US11092087B2 | Throttle valve device | Electricity | 0 | Active |
| US11092086B2 | Throttle valve device | Mechanical Engineering; Lighting; Heating | 0 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.