Shen; Chah M.
Patent Applications and Registrations
Patent applications and USPTO patent grants for Shen; Chah M..The latest application filed is for "hydrophylic contact lenses and methods for making same".
- Shen; Chah M. - Chicago IL
| Patent | Date |
|---|---|
| Hydrophylic contact lenses and methods for making same Grant 4,405,773 - Loshaek , et al. September 20, 1 | 1983-09-20 |
| Contact lenses of high gas permeability Grant 4,228,269 - Loshaek , et al. October 14, 1 | 1980-10-14 |
| Gas-permeable lens Grant RE30,368 - Loshaek , et al. August 12, 1 | 1980-08-12 |
| Hydrophilic polymers and contact lenses of high water content Grant 4,182,802 - Loshaek , et al. January 8, 1 | 1980-01-08 |
| Gas-permeable lens Grant 4,111,535 - Loshaek , et al. September 5, 1 | 1978-09-05 |
| Method of producing optically clear hydrophilic copolymers and contact lenses Grant 4,109,070 - Loshaek , et al. August 22, 1 | 1978-08-22 |
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