Inventor · disambiguated record
Arthur G. Ahlstone
Also filed as: AHLSTONE ARTHUR · AHLSTONE ARTHUR G · AHLSTONE ARTHUR GUSTAF
31 granted patents·1,239 citations·filing 1974–1995
98Inventor score
Top patents by PatentIndex Score
31 records- 0195US4736799ASubsea tubing hangerCAMERON IRON WORKS INC·Filed 1987·Granted Apr 12, 1988·149 cites·19 claims
- 0294US4209193ARigid connector for large diameter pipeVETCO INC·Filed 1977·Granted Jun 24, 1980·79 cites·14 claims
- 0392US4153278AHydraulically operated misalignment connectorVETCO INC·Filed 1977·Granted May 8, 1979·69 cites·41 claims
- 0488US4272109ARing gasket retainer for flanged connectorsVETCO INC·Filed 1979·Granted Jun 9, 1981·55 cites·19 claims
- 0588US4124231ARigid pipe connector with radially shiftable lock elements and method of making the sameVETCO INC·Filed 1977·Granted Nov 7, 1978·55 cites·18 claims
- 0687US4124232ARigid pipe connector with lock elements and method of making the sameVETCO INC·Filed 1977·Granted Nov 7, 1978·53 cites·14 claims
- 0784US4488740ABreech block hanger supportSMITH INTERNATIONAL·Filed 1982·Granted Dec 18, 1984·55 cites·51 claims
- 0884US4444421ADriveable pile connectionsVARCO INT·Filed 1980·Granted Apr 24, 1984·64 cites·13 claims
- 0984US4120520ALockable rigid connector for pipe and method of making the sameVETCO INC·Filed 1977·Granted Oct 17, 1978·46 cites·19 claims
- 1082US4294477AFlexible ring gasket retainer for flanged connectorsVETCO INC·Filed 1979·Granted Oct 13, 1981·43 cites·18 claims
- 1181US3933202AApparatus for setting and locking packing assemblies in wellheadsVETCO OFFSHORE IND INC·Filed 1974·Granted Jan 20, 1976·43 cites·20 claims
- 1280US4124229ARigid connector for pipe and method of making the sameVETCO INC·Filed 1977·Granted Nov 7, 1978·28 cites·19 claims
- 1378US4124233ARigid pipe connector with lock ring and method of making the sameVETCO INC·Filed 1977·Granted Nov 7, 1978·37 cites·26 claims
- 1476US4880061ATool for running structures in a wellCAMERON IRON WORKS INC·Filed 1987·Granted Nov 14, 1989·50 cites·7 claims
- 1575US4583569AWireline blowout preventerAHLSTONE ARTHUR·Filed 1985·Granted Apr 22, 1986·33 cites·29 claims
- 1672US3944273ARetrieving tool for wellhead packingVETCO OFFSHORE IND INC·Filed 1974·Granted Mar 16, 1976·30 cites·18 claims
- 1771US4153281AMisalignment connector with retained internal spherical sealVETCO INC·Filed 1977·Granted May 8, 1979·28 cites·23 claims
- 1871US4133557APreloaded misalignment pipe connectorVETCO INC·Filed 1977·Granted Jan 9, 1979·28 cites·19 claims
- 1970US4133558AMisalignment pipe connectorVETCO INC·Filed 1977·Granted Jan 9, 1979·28 cites·18 claims
- 2069US5207495AGraphic arts light boxVEMCO CORP·Filed 1991·Granted May 4, 1993·27 cites·22 claims
- 2168US4168853AShiftable ring gasket retainer for flanged connectorsVETCO INC·Filed 1977·Granted Sep 25, 1979·27 cites·21 claims
- 2264US4124230ARigid pipe connector with locking screws and method of making the sameVETCO INC·Filed 1977·Granted Nov 7, 1978·24 cites·12 claims
- 2363US4618285ABuoyant ring gasket installation toolSHELL OFFSHORE INC·Filed 1985·Granted Oct 21, 1986·19 cites·17 claims
- 2461US4601608ASubsea hydraulic connection method and apparatusSHELL OFFSHORE INC·Filed 1985·Granted Jul 22, 1986·30 cites·13 claims
- 2560US4168852ARing gasket retainer for flanged connectorsVETCO INC·Filed 1977·Granted Sep 25, 1979·21 cites·28 claims
- 2654US5823074AOpen head foster-style back-up tongOIL COUNTRY MANUFACTURING INC·Filed 1995·Granted Oct 20, 1998·34 cites·23 claims
- 2754US5069287ARetrievable guide base for subsea wellFMC CORP·Filed 1990·Granted Dec 3, 1991·28 cites·11 claims
- 2852US4030544AWellhead seal apparatus and pulling tool for releasing and retrieving such apparatusVETCO OFFSHORE IND INC·Filed 1975·Granted Jun 21, 1977·16 cites·11 claims
- 2951US5282755ALocking device for fluorescent lampsVEMCO CORP·Filed 1993·Granted Feb 1, 1994·17 cites·5 claims
- 3051US3937251AFluid pressure operated shut off valve apparatusVETCO OFFSHORE IND INC·Filed 1974·Granted Feb 10, 1976·9 cites·9 claims
- 3148US4602893ARing gasket installation toolSHELL OFFSHORE INC·Filed 1985·Granted Jul 29, 1986·14 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →