Assignee
ECKEL MFG CO
US·20 granted patents·822 citations·filing 1976–2018
Top patents by PatentIndex Score
20 records- 0187US4082017APower operated drill pipe tongsECKEL MFG CO·Filed 1976·Granted Apr 4, 1978·72 cites·36 claims
- 0286US4084453APower tongsECKEL MFG CO·Filed 1976·Granted Apr 18, 1978·69 cites·9 claims
- 0385US4593584APower tongs with improved hydraulic driveECKEL MFG CO·Filed 1984·Granted Jun 10, 1986·76 cites·18 claims
- 0485US4402239ABack-up power tongs and methodECKEL MFG CO·Filed 1981·Granted Sep 6, 1983·131 cites·14 claims
- 0584US5746276AMethod of rotating a tubular memberECKEL MFG CO·Filed 1996·Granted May 5, 1998·106 cites·17 claims
- 0677US4290304ABack-up power tongs and methodECKEL MFG CO·Filed 1979·Granted Sep 22, 1981·43 cites·13 claims
- 0772US4574664APowered back-up tongsECKEL MFG CO·Filed 1984·Granted Mar 11, 1986·57 cites·19 claims
- 0872US4404876APower tongsECKEL MFG CO·Filed 1980·Granted Sep 20, 1983·44 cites·6 claims
- 0970US4487092APower tong methods and apparatusECKEL MFG CO·Filed 1982·Granted Dec 11, 1984·25 cites·20 claims
- 1069US4089240APower tongsECKEL MFG CO·Filed 1976·Granted May 16, 1978·32 cites·10 claims
- 1168US5778742AHydraulic backup tongECKEL MFG CO·Filed 1997·Granted Jul 14, 1998·58 cites·20 claims
- 1265US6966385B2Tong positioning system and methodECKEL MFG CO·Filed 2003·Granted Nov 22, 2005·38 cites·39 claims
- 1351US5566769ATubular rotation tool for snubbing operationsECKEL MFG CO·Filed 1994·Granted Oct 22, 1996·22 cites·19 claims
- 1449US4590823ADual-string tubing tong and methodECKEL MFG CO·Filed 1984·Granted May 27, 1986·18 cites·21 claims
- 1546US6058811APower tong with improved door mechanismECKEL MFG CO·Filed 1999·Granted May 9, 2000·24 cites·20 claims
- 1639US6938520B1Backup tong with swing armsECKEL MFG CO·Filed 2004·Granted Sep 6, 2005·4 cites·20 claims
- 1738US7237456B2Power tong with reduced die markingsECKEL MFG CO·Filed 2004·Granted Jul 3, 2007·3 cites·14 claims
- 1836US11448018B2Power tong frame stiffnerECKEL MFG CO·Filed 2018·Granted Sep 20, 2022·0 cites·10 claims
- 1936US11255141B2Power tong with vertically pivoting doorECKEL MFG CO·Filed 2016·Granted Feb 22, 2022·0 cites·6 claims
- 2024US9835000B2Door latch for power tongECKEL MFG CO·Filed 2015·Granted Dec 5, 2017·0 cites·8 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →