Assignee
PILKINGTON DIFFRACTIVE LENSES
GB·4 granted patents·246 citations·filing 1991–1992
Top patents by PatentIndex Score
4 records- 0191US5296881AMethod and contact lenses for treating presbyopiaPILKINGTON DIFFRACTIVE LENSES·Filed 1991·Granted Mar 22, 1994·114 cites·6 claims
- 0290US5349394ARigid gas permeable lensesPILKINGTON DIFFRACTIVE LENSES·Filed 1991·Granted Sep 20, 1994·100 cites·12 claims
- 0368US5281294AManufacture of visual lensesPILKINGTON DIFFRACTIVE LENSES·Filed 1991·Granted Jan 25, 1994·21 cites·6 claims
- 0452US5331132AManufacture of visual lensesPILKINGTON DIFFRACTIVE LENSES·Filed 1992·Granted Jul 19, 1994·11 cites·8 claims
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