Petcen; Donald H.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Petcen; Donald H..The latest application filed is for "cartridge for a dispenser of reactive chemicals".
- Petcen; Donald H. - Colonial Heights VA
- Petcen; Donald H. - Sturbridge MA
| Patent | Date |
|---|---|
| Cartridge for a dispenser of reactive chemicals Grant 5,211,311 - Petcen May 18, 1 | 1993-05-18 |
| Dispenser for reactive chemicals Grant 5,090,814 - Petcen February 25, 1 | 1992-02-25 |
| Prepolymerization of monomer compositions containing diethylene glycol bis(allyl carbonate) Grant 4,623,708 - Ezrielev , et al. November 18, 1 | 1986-11-18 |
| Wrinkle prevention in glass/plastic composite lenses Grant 4,543,146 - Petcen September 24, 1 | 1985-09-24 |
| Method and apparatus for molding ophthalmic lenses Grant 4,540,532 - Petcen , et al. September 10, 1 | 1985-09-10 |
| Wrinkle prevention frame for lens manufacture Grant 4,494,344 - Petcen January 22, 1 | 1985-01-22 |
| Mold for casting lenses Grant 3,902,693 - Crandon , et al. September 2, 1 | 1975-09-02 |
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