Assignee
HOYA LENS CO LTD
9 granted patents·245 citations·filing 1974–1981
Top patents by PatentIndex Score
9 records- 0188US3988274AProcess for producing soft contact lensesHOYA LENS CO LTD·Filed 1975·Granted Oct 26, 1976·51 cites·11 claims
- 0286US4130672AMethod for coating anti-reflection film on surface of optical materialHOYA LENS CO LTD·Filed 1974·Granted Dec 19, 1978·52 cites·2 claims
- 0381US4128303AAnti reflection coating with a composite middle layerHOYA LENS CO LTD·Filed 1977·Granted Dec 5, 1978·41 cites·6 claims
- 0477US4217736AMethod for automatically grinding lensesHOYA LENS CO LTD·Filed 1977·Granted Aug 19, 1980·18 cites·1 claims
- 0566US4021102AAuto-refractometerHOYA LENS CO LTD·Filed 1974·Granted May 3, 1977·52 cites·6 claims
- 0664US4472036AProgressive multi-focal lensesHOYA LENS CO LTD·Filed 1981·Granted Sep 18, 1984·17 cites·2 claims
- 0762US4096684AAutomatic lens grinding machineHOYA LENS CO LTD·Filed 1976·Granted Jun 27, 1978·11 cites·13 claims
- 0835US3953130AAutomatic digital indicating lens meterHOYA LENS CO LTD·Filed 1974·Granted Apr 27, 1976·2 cites·6 claims
- 0923US3978386AServo system for finishing objects materialsHOYA LENS CO LTD·Filed 1974·Granted Aug 31, 1976·1 cites·2 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →