Inventor · disambiguated record
John D. Muchow
Also filed as: JONES GRAHAM J · MUCHOW JOHN D · MUCHOW JOHN DANIEL
19 granted patents·653 citations·filing 1974–2000
96Inventor score
Files withHYDRIL CO7WILLIS OIL TOOL CO6VALVE CONCEPTS INTERNATIONAL3SMITH INTERNATIONAL1VALVE CONCEPTS INT1
Top patents by PatentIndex Score
19 records- 0195US3958592ASafety shut-off valveWILLIS OIL TOOL CO·Filed 1974·Granted May 25, 1976·157 cites·5 claims
- 0294US4386756ASelf centering floating metal seal for a ball valveVALVE CONCEPTS INTERNATIONAL·Filed 1981·Granted Jun 7, 1983·78 cites·3 claims
- 0391US4360040AMultiple orifice valvesSMITH INTERNATIONAL·Filed 1980·Granted Nov 23, 1982·58 cites·27 claims
- 0486US4471810AValve apparatusVALVE CONCEPTS INTERNATIONAL·Filed 1982·Granted Sep 18, 1984·46 cites·9 claims
- 0583US4016621ADevice and method for launching and/or retrieving pipeline scrapersWILLIS OIL TOOL CO·Filed 1975·Granted Apr 12, 1977·41 cites·10 claims
- 0679US4461316ADrilling chokeHYDRIL CO·Filed 1982·Granted Jul 24, 1984·33 cites·4 claims
- 0778US4226263AErosion control trim in a control mechanism for a ball valveVALVE CONCEPTS INTERNATIONAL·Filed 1978·Granted Oct 7, 1980·30 cites·4 claims
- 0875US4026326AActuator pilot for fluid pressure monitoring safety systemWILLIS OIL TOOL CO·Filed 1975·Granted May 31, 1977·28 cites·2 claims
- 0972US4611630ASingle hydraulic line choke valve systemHYDRIL CO·Filed 1984·Granted Sep 16, 1986·25 cites·6 claims
- 1068US4180238AValve actuator having a rotary bi-directional apparatus with a dual ratchet mechanismVALVE CONCEPTS INT·Filed 1978·Granted Dec 25, 1979·25 cites·5 claims
- 1166US3977438AMeans to reset an actuator pilot valveWILLIS OIL TOOL CO·Filed 1975·Granted Aug 31, 1976·18 cites·20 claims
- 1264US4017053AFluid pressure monitoring safety systemWILLIS OIL TOOL CO·Filed 1974·Granted Apr 12, 1977·19 cites·7 claims
- 1362US4199834APig ball transfer unitWILLIS OIL TOOL·Filed 1978·Granted Apr 29, 1980·27 cites·10 claims
- 1452US4531545ADrilling choke valveHYDRIL CO·Filed 1983·Granted Jul 30, 1985·19 cites·8 claims
- 1550US6338385B1Retrievable downhole adjustable chokeHYDRIL CO·Filed 2000·Granted Jan 15, 2002·12 cites·49 claims
- 1648US6003548APressure vessel clamp connectorHYDRIL CO·Filed 1998·Granted Dec 21, 1999·15 cites·15 claims
- 1747US4558716AValve body for multiple valve insert packagesHYDRIL CO·Filed 1983·Granted Dec 17, 1985·12 cites·9 claims
- 1832US6302128B1Bi-directional rotary output actuatorHYDRIL CO·Filed 1998·Granted Oct 16, 2001·7 cites·14 claims
- 1931US4116215AAutomatic reset pilot valveWILLIS OIL TOOL CO·Filed 1977·Granted Sep 26, 1978·3 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →