Assignee
NL PETROLEUM PROD
GB·19 granted patents·808 citations·filing 1983–1987
Top patents by PatentIndex Score
19 records- 0194US4694919ARotary drill bits with nozzle former and method of manufacturingNL PETROLEUM PROD·Filed 1986·Granted Sep 22, 1987·113 cites·9 claims
- 0291US4718505ARotary drill bitsNL PETROLEUM PROD·Filed 1985·Granted Jan 12, 1988·117 cites·18 claims
- 0391US4669522AManufacture of rotary drill bitsNL PETROLEUM PROD·Filed 1986·Granted Jun 2, 1987·66 cites·15 claims
- 0487US4679639ARotary drill bits and cutting elements for such bitsNL PETROLEUM PROD·Filed 1984·Granted Jul 14, 1987·73 cites·26 claims
- 0584US4804049ARotary drill bitsNL PETROLEUM PROD·Filed 1984·Granted Feb 14, 1989·60 cites·8 claims
- 0683US4624830AManufacture of rotary drill bitsNL PETROLEUM PROD·Filed 1984·Granted Nov 25, 1986·35 cites·27 claims
- 0780US4823892ARotary drill bitsNL PETROLEUM PROD·Filed 1987·Granted Apr 25, 1989·64 cites·1 claims
- 0879US4699227AMethod of forming cutting structures for rotary drill bitsNL PETROLEUM PROD·Filed 1985·Granted Oct 13, 1987·29 cites·12 claims
- 0976US4762028ARotary drill bitsNL PETROLEUM PROD·Filed 1987·Granted Aug 9, 1988·36 cites·13 claims
- 1071US4733735ARotary drill bitsNL PETROLEUM PROD·Filed 1986·Granted Mar 29, 1988·43 cites·28 claims
- 1169US4577706ARotary drill bitsNL PETROLEUM PROD·Filed 1983·Granted Mar 25, 1986·35 cites·14 claims
- 1264US4928777ACutting elements for rotary drill bitsNL PETROLEUM PROD·Filed 1987·Granted May 29, 1990·26 cites·8 claims
- 1363US4700790ARotary drill bitsNL PETROLEUM PROD·Filed 1985·Granted Oct 20, 1987·22 cites·9 claims
- 1451US4705122ACutter assemblies for rotary drill bitsNL PETROLEUM PROD·Filed 1986·Granted Nov 10, 1987·24 cites·18 claims
- 1550US4781256ACutting structures for rotary drill bitsNL PETROLEUM PROD·Filed 1987·Granted Nov 1, 1988·10 cites·20 claims
- 1648US4720371ARotary drill bitsNL PETROLEUM PROD·Filed 1986·Granted Jan 19, 1988·21 cites·15 claims
- 1742US4790396ARotary drill bits for use in coring holes in subsurface formationsNL PETROLEUM PROD·Filed 1986·Granted Dec 13, 1988·16 cites·5 claims
- 1838US4697654ARotary drill bitsNL PETROLEUM PROD·Filed 1985·Granted Oct 6, 1987·10 cites·29 claims
- 1938US4596296ARotary drill bitsNL PETROLEUM PROD·Filed 1984·Granted Jun 24, 1986·8 cites·15 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →