Ken Ishikawa
37Patents
12h-index
40Co-inventors
81Inventor score
Filing activity: Aug 25, 1978 → Nov 6, 2023
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5949811A | X-ray apparatus | Human Necessities | 139 | Expired |
| US4575181A | Optical fiber assembly with cladding light scattering means | Physics | 72 | Expired |
| US5878108A | Method for generating X-ray image and apparatus therefor | Emerging Cross-Sectional Technologies | 30 | Expired |
| US4193552A | Liquid sprayer pipe with inclined slits | Performing Operations; Transporting | 25 | Expired |
| US5353220A | Apparatus and method for displaying three-dimensional image and ultrasonic diagnosis apparatus using the same | Emerging Cross-Sectional Technologies | 22 | Expired |
| US9239245B2 | Lane guidance display system, method, and program | Physics | 21 | Active |
| US5502778A | Image data compression method for applying different compression ratios to different portions of an image | Physics | 18 | Expired |
| US5739952A | Polarizing beam splitter and optical head assembly | Physics | 17 | Expired |
| US4682301A | Digital filter for processing two-dimensional digital image | Physics | 15 | Expired |
| US5828643A | Optical pickup head apparatus | Physics | 15 | Expired |
| US5036545A | Picture image reading system | Electricity | 13 | Expired |
| US4574769A | Multi-wire vibratory cutting method and apparatus | Performing Operations; Transporting | 12 | Expired |
| US9836051B2 | Automated drive assisting device, automated drive assisting method, and program | Physics | 11 | Active |
| US5878107A | X-ray radiograph apparatus | Human Necessities | 7 | Expired |
| US4484412A | Method and apparatus for cutting hard and brittle material using system for applying vibration in two directions | Emerging Cross-Sectional Technologies | 6 | Expired |
| US6016300A | Optical pickup head apparatus | Physics | 6 | Expired |
| US4652735A | Image reader for X-ray film or the like having a detection system with an expanded dynamic range | Physics | 6 | Expired |
| US5793733A | Polarizing beam splitter and method for manufacturing same | Physics | 6 | Expired |
| US8558758B2 | Information display apparatus | Physics | 5 | Active |
| US4394764A | Laser processing apparatus | Electricity | 4 | Expired |
| US9508258B2 | Intersection guide system, method, and program | Physics | 3 | Active |
| US9175976B2 | Lane guidance display system, lane guidance display method, and lane guidance display program | Physics | 2 | Active |
| US9031787B2 | Lane guidance display system, lane guidance display method, and lane guidance display program | Physics | 2 | Active |
| US11851072B2 | In-vehicle environment setting system, in-vehicle environment setting method and in-vehicle environment setting program | Performing Operations; Transporting | 1 | Active |
| US7908524B2 | Storage medium readable by a machine tangible embodying event notification management program and event notification management apparatus | Electricity | 1 | Active |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.