Inventor · disambiguated record
Robert C. Houlgrave
Also filed as: HOULGRAVE ROBERT C
7 granted patents·199 citations·filing 1976–1987
88Inventor score
Top patents by PatentIndex Score
7 records- 0194US4124194AMetallic seat construction for valvesACF IND INC·Filed 1977·Granted Nov 7, 1978·61 cites·9 claims
- 0275US4770248ADevice to orient electrical connectors in a subsea wellHUGHES TOOL CO·Filed 1987·Granted Sep 13, 1988·36 cites·5 claims
- 0371US4116419ALimited float seat construction for expanding gate valveACF IND INC·Filed 1977·Granted Sep 26, 1978·25 cites·6 claims
- 0470US4103863AActuator for expanding gate valvesACF IND INC·Filed 1976·Granted Aug 1, 1978·25 cites·10 claims
- 0555US4258743AExpanding gate valve having mechanically secured seatsACF IND INC·Filed 1979·Granted Mar 31, 1981·15 cites·24 claims
- 0654US4648747AIntegral buoyant riserHUGHES TOOL CO·Filed 1985·Granted Mar 10, 1987·25 cites·6 claims
- 0739US4721132ASubsea flowline quick disconnect couplingHUGHES TOOL CO·Filed 1987·Granted Jan 26, 1988·12 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →