Individual holder
HILL RALPH W
3 granted patents·72 citations·filing 1974–1976
Individually held — no corporate assignee on record.
Top patents by PatentIndex Score
3 records- 0179US4054155AHydraulic actuated control valveHILL RALPH W·Filed 1976·Granted Oct 18, 1977·26 cites·5 claims
- 0274US3990711ARestrained elastomeric seal ring meansHILL RALPH W·Filed 1975·Granted Nov 9, 1976·32 cites·7 claims
- 0356US3951170AFluid control valveHILL RALPH W·Filed 1974·Granted Apr 20, 1976·14 cites·3 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →