Inventor · disambiguated record
Martin E. True
Also filed as: TRUE MARTIN E
7 granted patents·344 citations·filing 1975–1983
89Inventor score
Top patents by PatentIndex Score
7 records- 0191US4042033ACombination subsurface safety valve and chemical injector valveEXXON PRODUCTION RESEARCH CO·Filed 1976·Granted Aug 16, 1977·98 cites·10 claims
- 0289US4433448APower pipe thread cleanerWEATHERFORD LAMB·Filed 1982·Granted Feb 28, 1984·49 cites·8 claims
- 0388US4683962ASpinner for use in connecting pipe jointsTRUE MARTIN E·Filed 1983·Granted Aug 4, 1987·103 cites·4 claims
- 0481US3973586AVelocity-tubing pressure actuated subsurface safety valveEXXON PRODUCTION RESEARCH CO·Filed 1975·Granted Aug 10, 1976·33 cites·10 claims
- 0577US4125040APower tong apparatusWEATHERFORD LAMB·Filed 1977·Granted Nov 14, 1978·22 cites·8 claims
- 0655US4442736APower pipe tong rotary plunger inserterWEATHERFORD LAMB·Filed 1982·Granted Apr 17, 1984·23 cites·9 claims
- 0754US4630688APower spinner for rotating a kelly jointWEATHERFORD LAMB·Filed 1981·Granted Dec 23, 1986·16 cites·4 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →