Inventor · disambiguated record
Richard M. Sproul
Also filed as: SPROUL RICHARD · SPROUL RICHARD M
7 granted patents·1 pending application·497 citations·filing 1985–2022
90Inventor score
Top patents by PatentIndex Score
8 records- 0190US4813481AExpendable flapper valveOTIS ENG CO·Filed 1987·Granted Mar 21, 1989·113 cites·11 claims
- 0289US4930573ADual hydraulic set packerOTIS ENG CO·Filed 1989·Granted Jun 5, 1990·114 cites·13 claims
- 0386US4846281ADual flapper valve assemblyOTIS ENG CO·Filed 1988·Granted Jul 11, 1989·90 cites·10 claims
- 0472US4671354AWell packerOTIS ENG CO·Filed 1985·Granted Jun 9, 1987·45 cites·14 claims
- 0569US5048610ASingle bore packer with dual flow conversion for gas lift completionOTIS ENG CO·Filed 1990·Granted Sep 17, 1991·54 cites·6 claims
- 0668US4832129AMulti-position tool and method for running and setting a packerOTIS ENG CO·Filed 1987·Granted May 23, 1989·44 cites·12 claims
- 0759US5113939ASingle bore packer with dual flow conversion for gas lift completionOTIS ENG CO·Filed 1990·Granted May 19, 1992·37 cites·4 claims
- 0859US2022363576A1Silica reducer compositions and methods for treatment of produced water from thermal in situ bitumen or heavy hydrocarbon recovery operationsBAYMAG INC·Filed 2022·Application pending·0 cites
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