Ashai Optical Co., Ltd.
2Patents
0Active
2Granted
22Portfolio score
Filing activity: Jun 23, 1981 → Mar 8, 1985
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US4600278A | Lens cap | Physics | 10 | Expired |
| US4455723A | Removable coupling device between a photographic camera and an accessory | Emerging Cross-Sectional Technologies | 3 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.