Assignee
REED TOOL CO
US·68 granted patents·2,737 citations·filing 1974–1990
Top patents by PatentIndex Score
68 records- 0197US4956238AManufacture of cutting structures for rotary drill bitsREED TOOL CO·Filed 1988·Granted Sep 11, 1990·92 cites·3 claims
- 0296US4889017ARotary drill bit for use in drilling holes in subsurface earth formationsREED TOOL CO·Filed 1988·Granted Dec 26, 1989·336 cites·10 claims
- 0392US4844185ARotary drill bitsREED TOOL CO·Filed 1987·Granted Jul 4, 1989·130 cites·17 claims
- 0491US5119892ANotary drill bitsREED TOOL CO·Filed 1990·Granted Jun 9, 1992·151 cites·4 claims
- 0591US4940099ACutting elements for roller cutter drill bitsREED TOOL CO·Filed 1989·Granted Jul 10, 1990·113 cites·2 claims
- 0690US4277108AHard surfacing for oil well toolsREED TOOL CO·Filed 1980·Granted Jul 7, 1981·67 cites·3 claims
- 0789US4043611AHard surfaced well tool and method of making sameREED TOOL CO·Filed 1976·Granted Aug 23, 1977·58 cites·3 claims
- 0888US4848476ADrill bit having offset roller cutters and improved nozzlesREED TOOL CO·Filed 1988·Granted Jul 18, 1989·92 cites·3 claims
- 0986US4987800ACutter elements for rotary drill bitsREED TOOL CO·Filed 1989·Granted Jan 29, 1991·91 cites·21 claims
- 1084US4969378ACase hardened roller cutter for a rotary drill bit and method of makingREED TOOL CO·Filed 1989·Granted Nov 13, 1990·42 cites·9 claims
- 1184US4907662ARotary drill bit having improved mounting means for multiple cutting elementsREED TOOL CO·Filed 1987·Granted Mar 13, 1990·44 cites·10 claims
- 1284US4619534ARoller cutter drill bit having a texturized seal memberREED TOOL CO·Filed 1984·Granted Oct 28, 1986·69 cites·12 claims
- 1383US4776412ANozzle assembly for rotary drill bit and method of installationREED TOOL CO·Filed 1988·Granted Oct 11, 1988·54 cites·11 claims
- 1483US4682663AMounting means for cutting elements in drag type rotary drill bitREED TOOL CO·Filed 1986·Granted Jul 28, 1987·67 cites·13 claims
- 1583US4618269AHardened bearing surface and method of forming sameREED TOOL CO·Filed 1985·Granted Oct 21, 1986·43 cites·9 claims
- 1680US4995887ACutting elements for rotary drill bitsREED TOOL CO·Filed 1989·Granted Feb 26, 1991·30 cites·38 claims
- 1780US4838365ASeal assembly for rotary drill bitsREED TOOL CO·Filed 1988·Granted Jun 13, 1989·52 cites·3 claims
- 1879US4075886AFracture toughness test methodREED TOOL CO·Filed 1977·Granted Feb 28, 1978·25 cites·12 claims
- 1978US4942933ARelating to rotary drill bitsREED TOOL CO·Filed 1988·Granted Jul 24, 1990·52 cites·13 claims
- 2078US4848489ADrag drill bit having improved arrangement of cutting elementsREED TOOL CO·Filed 1988·Granted Jul 18, 1989·56 cites·12 claims
- 2178US4606418ACutting means for drag drill bitsREED TOOL CO·Filed 1985·Granted Aug 19, 1986·78 cites·18 claims
- 2278US4157057ASingle acting pistonREED TOOL CO·Filed 1976·Granted Jun 5, 1979·38 cites·1 claims
- 2377US4074922ADrill bitREED TOOL CO·Filed 1976·Granted Feb 21, 1978·22 cites·10 claims
- 2476US3964551APneumatic impact drilling toolREED TOOL CO·Filed 1974·Granted Jun 22, 1976·36 cites·14 claims
- 2573US4106571APneumatic impact drilling toolREED TOOL CO·Filed 1976·Granted Aug 15, 1978·42 cites·5 claims
- 2672US4949598AManufacture of rotary drill bitsREED TOOL CO·Filed 1988·Granted Aug 21, 1990·25 cites·23 claims
- 2772US4887493ARoller cutter drill bit and method of formingREED TOOL CO·Filed 1988·Granted Dec 19, 1989·26 cites·22 claims
- 2872US4254840ADrill bit insertREED TOOL CO·Filed 1978·Granted Mar 10, 1981·38 cites·6 claims
- 2971US4054180AImpact drilling tool having a shuttle valveREED TOOL CO·Filed 1976·Granted Oct 18, 1977·32 cites·17 claims
- 3066US4546837ADrill bit having angled nozzles for improved bit and well bore cleaningREED TOOL CO·Filed 1984·Granted Oct 15, 1985·32 cites·12 claims
- 3166US4158973ARolling cutter drill bitREED TOOL CO·Filed 1978·Granted Jun 26, 1979·18 cites·2 claims
- 3266US3970106ACollapsible ball valveREED TOOL CO·Filed 1975·Granted Jul 20, 1976·22 cites·9 claims
- 3365US4848491ARotary drill bitsREED TOOL CO·Filed 1987·Granted Jul 18, 1989·41 cites·9 claims
- 3465US4623028ASeal assembly for drill bitsREED TOOL CO·Filed 1985·Granted Nov 18, 1986·36 cites·13 claims
- 3564US4053306ATungsten carbide-steel alloyREED TOOL CO·Filed 1976·Granted Oct 11, 1977·19 cites·2 claims
- 3663US4646857AMeans to secure cutting elements on drag type drill bitsREED TOOL CO·Filed 1985·Granted Mar 3, 1987·43 cites·10 claims
- 3762US4595067ARotary drill bit, parts therefor, and method of manufacturing thereofREED TOOL CO·Filed 1984·Granted Jun 17, 1986·27 cites·10 claims
- 3862US4100976APneumatic impact drilling toolREED TOOL CO·Filed 1976·Granted Jul 18, 1978·27 cites·10 claims
- 3961US4090489AFracture toughness test methodREED TOOL CO·Filed 1977·Granted May 23, 1978·13 cites·3 claims
- 4060US4741406ADrill bit having offset roller cutters and improved nozzlesREED TOOL CO·Filed 1986·Granted May 3, 1988·31 cites·5 claims
- 4159US4080091ADrill bitREED TOOL CO·Filed 1976·Granted Mar 21, 1978·15 cites·5 claims
- 4259US4037673ARoller cutter drill bitREED TOOL CO·Filed 1976·Granted Jul 26, 1977·24 cites·3 claims
- 4358US4256191AIntermittent high-drag oil well drilling methods and apparatusREED TOOL CO·Filed 1979·Granted Mar 17, 1981·20 cites·9 claims
- 4457US5109935ARotary drill bitsREED TOOL CO·Filed 1990·Granted May 5, 1992·39 cites·4 claims
- 4557US4446935AIntermittent high-drag oil well drilling bitREED TOOL CO·Filed 1982·Granted May 8, 1984·23 cites·7 claims
- 4656US4830123AMounting means for cutting elements in drag type rotary drill bitREED TOOL CO·Filed 1987·Granted May 16, 1989·25 cites·5 claims
- 4756US4794994ADrag drill bit having improved flow of drilling fluidREED TOOL CO·Filed 1987·Granted Jan 3, 1989·26 cites·15 claims
- 4856US4610313ADrill bit having a failure indicatorREED TOOL CO·Filed 1985·Granted Sep 9, 1986·26 cites·8 claims
- 4956US4016944APneumatic hammer-auger earth boring apparatusREED TOOL CO·Filed 1976·Granted Apr 12, 1977·23 cites·10 claims
- 5056US3990751ADrill bitREED TOOL CO·Filed 1975·Granted Nov 9, 1976·11 cites·7 claims
Showing the top 50 of 68 patent records by PatentIndex Score.
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