Keizo Anan
3Patents
3h-index
11Co-inventors
43Inventor score
Filing activity: Sep 6, 1989 → Jun 25, 1997
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4933406A | Contact lens article made of silicon- and fluorine-containing resin | Chemistry; Metallurgy | 11 | Expired |
| US5883152A | Contact lens | Chemistry; Metallurgy | 6 | Expired |
| US4948854A | Transparent optical article and process for preparing same | Chemistry; Metallurgy | 4 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.