Assignee
HEPWORTH & GRANDAGE LTD
4 granted patents·95 citations·filing 1975–1979
Top patents by PatentIndex Score
4 records- 0191US4232091AComposite materials and their productionHEPWORTH & GRANDAGE LTD·Filed 1979·Granted Nov 4, 1980·68 cites·14 claims
- 0261US3947562AProduction of a form of alumina whiskersHEPWORTH & GRANDAGE LTD·Filed 1975·Granted Mar 30, 1976·14 cites·15 claims
- 0325US4053165AOil ring designHEPWORTH & GRANDAGE LTD·Filed 1975·Granted Oct 11, 1977·7 cites·6 claims
- 0423US4074617APistons for internal combustion engines or for compressorsHEPWORTH & GRANDAGE LTD·Filed 1976·Granted Feb 21, 1978·6 cites·4 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →