Inventor · disambiguated record
Michael L. Cognevich
Also filed as: COGNEVICH MICHAEL · COGNEVICH MICHAEL L
7 granted patents·364 citations·filing 1981–2005
89Inventor score
Top patents by PatentIndex Score
7 records- 0198US7061197B1Pivoting and barrier locking operator systemWAYNE DALTON CORP·Filed 2005·Granted Jun 13, 2006·66 cites·54 claims
- 0288US4415036APressure equalizing flapper type safety valve for subterranean wellsBAKER OIL TOOLS INC·Filed 1982·Granted Nov 15, 1983·84 cites·15 claims
- 0384US5842501APilot operated safety relief valveFLOW SAFE INC·Filed 1997·Granted Dec 1, 1998·57 cites·11 claims
- 0484US4960173AReleasable well tool stabilizerBAKER HUGHES INC·Filed 1989·Granted Oct 2, 1990·83 cites·3 claims
- 0574US5738333ARelief valveFLOW SAFE INC·Filed 1996·Granted Apr 14, 1998·40 cites·4 claims
- 0655US4433828AReactor vessel stud closure systemWESTINGHOUSE ELECTRIC CORP·Filed 1981·Granted Feb 28, 1984·15 cites·13 claims
- 0751US5141416APlunger for a downhole reciprocating oil well pump and the method of manufacture thereofDOVER RESOURCES INC·Filed 1991·Granted Aug 25, 1992·19 cites·10 claims
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