Nobuhiko Washizuka
6Patents
5h-index
29Co-inventors
55Inventor score
Filing activity: Sep 26, 1986 → Feb 27, 1995
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5749830A | Fluorescent endoscope apparatus | Electricity | 423 | Expired |
| US5630795A | Cleaning tube apparatus for endoscope | Human Necessities | 246 | Expired |
| US5423848A | Trocar | Human Necessities | 206 | Expired |
| US4813400A | Optical fiber assembly for an endoscope | Human Necessities | 49 | Expired |
| US4756303A | Insertion section of an endoscope | Performing Operations; Transporting | 38 | Expired |
| US4911147A | Endoscope with a shock absorber | Human Necessities | 3 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.