Signet Optical Corporation
4Patents
0Active
4Granted
25Portfolio score
Filing activity: Jun 30, 1975 → May 1, 1978
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US3986337A | Thermoelectric heating and cooling apparatus | Mechanical Engineering; Lighting; Heating | 18 | Expired |
| US4288149A | Resin ophthalmic lenses having a prismatic segment | Physics | 6 | Expired |
| US4163655A | Method of manufacture of molds for resin ophthalmic lenses having a segment with prismatic optical effect | Emerging Cross-Sectional Technologies | 6 | Expired |
| US4163541A | Mold for the casting of resin ophthalmic lenses having a prismatic segment | Emerging Cross-Sectional Technologies | 5 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.