Joseph C. Liu

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Tulsa, OK, US

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Patents Grantslast 30 patents

Information Patent Grant
Elongated permanent magnet synchronous motor
- Patent number 6,388,353
- Issue date May 14, 2002
- Camco International, Inc.
- Joseph C. Liu
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Rotor bearing for submersible pump motor
- Patent number 5,128,573
- Issue date Jul 7, 1992
- Oil Dynamics, Inc.
- Joseph C. Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Watertight seal for plug-in type pothead
- Patent number 5,113,101
- Issue date May 12, 1992
- Oil Dynamics, Inc.
- Joseph C. Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Stator and bearing for submersible pump motor
- Patent number 5,003,210
- Issue date Mar 26, 1991
- Oil Dynamics, Inc.
- Joseph C. Liu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER