Inventor · disambiguated record
J. C. Birdwell
Also filed as: BIRDWELL J C
14 granted patents·486 citations·filing 1975–1990
94Inventor score
Top patents by PatentIndex Score
14 records- 0193US4500267AMud pumpBIRDWELL J C·Filed 1983·Granted Feb 19, 1985·66 cites·12 claims
- 0292US4611973APumping system and method of operating the sameP & B IND·Filed 1983·Granted Sep 16, 1986·71 cites·16 claims
- 0389US5616009AMud pumpFiled 1990·Granted Apr 1, 1997·80 cites·6 claims
- 0488US3984007APipe handling apparatus for pipe laying bargesMID CONTINENT PIPELINE EQUIPME·Filed 1975·Granted Oct 5, 1976·28 cites·22 claims
- 0578US4541779AMud pumpBIRDWELL J C·Filed 1983·Granted Sep 17, 1985·30 cites·50 claims
- 0675US4062456AAdjustable rollers for positioning pipeMIDCON PIPELINE EQUIPMENT CO·Filed 1976·Granted Dec 13, 1977·24 cites·15 claims
- 0772US4869100AVariable orifice control meansBIRDWELL J C·Filed 1988·Granted Sep 26, 1989·44 cites·11 claims
- 0870US4932005AFluid means for data transmissionBIRDWELL J C·Filed 1988·Granted Jun 5, 1990·41 cites·12 claims
- 0968US4676724AMud pumpBIRDWELL J C·Filed 1985·Granted Jun 30, 1987·41 cites·10 claims
- 1067US4067450APipe handling apparatus for pipe laying bargesMIDCON PIPELINE EQUIPMENT CO·Filed 1976·Granted Jan 10, 1978·13 cites·8 claims
- 1161US4029215APipe handling apparatus for pipe laying bargesMIDCON PIPELINE EQUIPMENT CO·Filed 1976·Granted Jun 14, 1977·23 cites·11 claims
- 1255US4061231APipe handling apparatus for pipe laying bargesMIDCON PIPELINE EQUIPMENT CO·Filed 1976·Granted Dec 6, 1977·13 cites·6 claims
- 1346US4098359AHydraulically operated downhole motorBIRDWELL J C·Filed 1977·Granted Jul 4, 1978·8 cites·10 claims
- 1442US4016393ASystem for laying pipeMIDCON PIPELINE EQUIPMENT CO·Filed 1975·Granted Apr 5, 1977·4 cites·47 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →