Inventor · disambiguated record
Lubbert Westra
Also filed as: WESTRA LUBBERT
4 granted patents·140 citations·filing 1986–2011
79Inventor score
Top patents by PatentIndex Score
4 records- 0189US4945947ABall-type check valveCHROMALLOY AMERICAN CORP·Filed 1989·Granted Aug 7, 1990·61 cites·4 claims
- 0288US4655247ABall-type check valve assemblyCHROMALLOY AMERICAN CORP·Filed 1986·Granted Apr 7, 1987·59 cites·7 claims
- 0373US8731849B2Hydrostatic pressure testing system and methodWESTRA LUBBERT·Filed 2011·Granted May 20, 2014·7 cites·29 claims
- 0432US5690172ASeal-sub packer and a setting tool thereforALEXANDER OIL TOOLS INC·Filed 1996·Granted Nov 25, 1997·13 cites·19 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →