Assignee
SODERBERG RES & DEV
US·7 granted patents·211 citations·filing 1982–1995
Top patents by PatentIndex Score
7 records- 0187US4962911AHemi-wedge valveSODERBERG RES & DEV·Filed 1990·Granted Oct 16, 1990·60 cites·20 claims
- 0270US5333834AValve driverSODERBERG RES & DEV·Filed 1993·Granted Aug 2, 1994·31 cites·29 claims
- 0366US4681167AApparatus and method for automatically and periodically introducing a fluid into a producing oil wellSODERBERG RES & DEV·Filed 1985·Granted Jul 21, 1987·37 cites·17 claims
- 0461US4645007ATubing drain valveSODERBERG RES & DEV·Filed 1984·Granted Feb 24, 1987·26 cites·21 claims
- 0558US4540348AOilwell pump system and methodSODERBERG RES & DEV·Filed 1982·Granted Sep 10, 1985·12 cites·18 claims
- 0656US4637471ATubing drain valve useful with heavy, sand-bearing oilSODERBERG RES & DEV·Filed 1985·Granted Jan 20, 1987·27 cites·28 claims
- 0755US5507469AValve actuator system for initial torque reductionSODERBERG RES & DEV·Filed 1995·Granted Apr 16, 1996·18 cites·20 claims
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Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →