| Patent Number |
Title Of Patent |
Date Issued |
| 4478873 |
Method imparting anti-static, anti-reflective properties to ophthalmic lenses |
October 23, 1984 |
| Novel anti-static and/or anti-reflective optical elements are produced by coating at least one surface of an organic polymeric plastic substrate with a protective organo-silica coating composition and then subjecting the coated plastic substrate to a glow discharge treatment. |
| 4273809 |
Method of preparing cast resin lenses |
June 16, 1981 |
| Cast resin lenses which are removed from casting molds early in a cure cycle are coated for protection against exposure to oxygen to provide increased post cure surface polymerization and abrasion resistance. |
| 4238524 |
Process for identification marking clear plastic articles |
December 9, 1980 |
| A fade resistant, visually undetectable identification mark is imparted to an optically clear plastic lens or the like by providing a marking composition comprising a fluorescent dye and a liquid carrier material, and preferably including an inert sublimable solid diluent, applying the |
| 4229228 |
Coating composition |
October 21, 1980 |
| A coating composition which results from hydrolyzing 35 to 70 weight percent tetraethyl orthosilicate and 60 to 20 weight percent of certain silane is useful for providing abrasion resisting coatings for plastics after curing. Optionally, up to 20 weight percent of a silane having a |
| 4186026 |
Abrasion-resistant coating composition |
January 29, 1980 |
| A coating composition prepared by simultaneously hydrolyzing 20 to 50 wt. % tetraethylorthosilicate, 37 to 60 wt. % of certain silanes and 15 to 35 wt. % formalin has good abrasion resistance and resistance to crazing on substrates having a high affinity for water as well as those with a |
| 4173490 |
Coating composition |
November 6, 1979 |
| A coating composition which results from hydrolyzing 40 to 70 weight per cent tetraethyl orthosilicate and 60 to 20 weight per cent of certain silane is useful for providing abrasion resisting coatings for plastics after curing. Optionally, up to 20 weight percent of a silane having a |
| 4120992 |
Abrasion-resistant optical element |
October 17, 1978 |
| An abrasion-resistant organic optical element comprising a transparent base of a synthetic organic material having an adhering coating of an abrasion-resistant material comprising a polysilicic acid ester of an alcohol containing from 1 to 12 carbon atoms and a partially hydrolyzed v |
| 4049868 |
Abrasion-resistant optical element |
September 20, 1977 |
| An abrasion-resistant organic optical element comprising a transparent base of a synthetic organic material having an adhering coating of an abrasion-resistant material comprising a polysilicic acid ester of an alcohol containing from 1 to 12 carbon atoms and a partially hydrolyzed v |
