Chikara Nagano
13Patents
6h-index
29Co-inventors
62Inventor score
Filing activity: Nov 30, 1979 → Aug 7, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4852985A | Illuminating device for microscopes | Physics | 141 | Expired |
| US5751475A | Phase contrast microscope | Physics | 64 | Expired |
| US4971445A | Fine surface profile measuring apparatus | Physics | 23 | Expired |
| US5469299A | Objective lens system | Physics | 23 | Expired |
| US5982535A | Centrifuge microscope capable of realizing polarized light observation | Physics | 20 | Expired |
| US4624535A | Objective lens system for microscopes | Physics | 7 | Expired |
| US4834516A | Noninverting photo-microscope with variable power lenses | Physics | 6 | Expired |
| US4322136A | Microscope objective lens system | Physics | 5 | Expired |
| US5191473A | Objectives | Physics | 4 | Expired |
| US5146363A | Microscope optical system | Physics | 4 | Expired |
| US5394271A | Optical system for microscopes | Physics | 3 | Expired |
| US4812039A | Schlieren optical device | Physics | 3 | Expired |
| USRE36299E | Optical system for microscopes | General | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.