Inventor · disambiguated record
Howard R. Mashaw, Jr.
Also filed as: MASHAW JR HOWARD R
5 granted patents·348 citations·filing 1983–1991
85Inventor score
Technology areasE21B
Files withOTIS ENG CO5
Top patents by PatentIndex Score
5 records- 0192US5211241AVariable flow sliding sleeve valve and positioning shifting tool thereforOTIS ENG CO·Filed 1991·Granted May 18, 1993·162 cites·16 claims
- 0283US5183114ASleeve valve device and shifting tool thereforOTIS ENG CO·Filed 1991·Granted Feb 2, 1993·93 cites·33 claims
- 0372US4915175AWell flow deviceOTIS ENG CO·Filed 1989·Granted Apr 10, 1990·48 cites·5 claims
- 0463US4944345AWell device lock mandrel and running toolOTIS ENG CO·Filed 1989·Granted Jul 31, 1990·36 cites·20 claims
- 0536US4448427APiston-expanded metallic seal for side door well valveOTIS ENG CO·Filed 1983·Granted May 15, 1984·9 cites·8 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →