Assignee
VAREL MANUFACTURING COMPANY
10 granted patents·330 citations·filing 1978–1988
Top patents by PatentIndex Score
10 records- 0185US4687066ARock bit circulation nozzleVAREL MANUFACTURING COMPANY·Filed 1986·Granted Aug 18, 1987·72 cites·8 claims
- 0276US4763736AAsymmetrical rotary cone bitVAREL MANUFACTURING COMPANY·Filed 1987·Granted Aug 16, 1988·63 cites·8 claims
- 0376US4333364AMethod for manufacturing a rotary drill bit having a solid forged, unitary bodyVAREL MANUFACTURING COMPANY·Filed 1980·Granted Jun 8, 1982·33 cites·5 claims
- 0468US4256194ARotary drill bit having a solid forged, unitary bodyVAREL MANUFACTURING COMPANY·Filed 1978·Granted Mar 17, 1981·33 cites·17 claims
- 0561US4722404ADrill bit bearing sealVAREL MANUFACTURING COMPANY·Filed 1987·Granted Feb 2, 1988·30 cites·8 claims
- 0656US4880068ARotary drill bit locking mechanismVAREL MANUFACTURING COMPANY·Filed 1988·Granted Nov 14, 1989·37 cites·8 claims
- 0755US4624329ARotating cutter drill setVAREL MANUFACTURING COMPANY·Filed 1985·Granted Nov 25, 1986·28 cites·4 claims
- 0852US4452539ABearing seal for rotating cutter drill bitVAREL MANUFACTURING COMPANY·Filed 1981·Granted Jun 5, 1984·21 cites·3 claims
- 0924US4296823ACable tool with circulating drill stemVAREL MANUFACTURING COMPANY·Filed 1979·Granted Oct 27, 1981·8 cites·18 claims
- 1019US4257654AFilament wound bearingVAREL MANUFACTURING COMPANY·Filed 1979·Granted Mar 24, 1981·5 cites·7 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →