Inventor · disambiguated record
Donald J. Ortloff
Also filed as: ORTLOFF DONALD J
6 granted patents·601 citations·filing 1983–1986
89Inventor score
Files withHYDRIL CO6
Top patents by PatentIndex Score
6 records- 0197US4703954AThreaded pipe connection having wedge threadsHYDRIL CO·Filed 1985·Granted Nov 3, 1987·200 cites·4 claims
- 0294US4662659ATubular joint with trapped mid-joint metal-to-metal seal having unequal tapersHYDRIL CO·Filed 1986·Granted May 5, 1987·111 cites·7 claims
- 0392US4688832AWell pipe jointHYDRIL CO·Filed 1984·Granted Aug 25, 1987·125 cites·26 claims
- 0488US4928999AElastomeric guard seal for tubular connectionsHYDRIL CO·Filed 1984·Granted May 29, 1990·65 cites·17 claims
- 0580US5423579ATubular coupling with metal to metal sealHYDRIL CO·Filed 1983·Granted Jun 13, 1995·47 cites·11 claims
- 0676US4671544ASeal for threaded pipe connectionHYDRIL CO·Filed 1985·Granted Jun 9, 1987·53 cites·15 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →