Murl R. Richardson

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Fort Worth, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Force balanced rotating pressure control device
- Patent number 8,028,750
- Issue date Oct 4, 2011
- Sunstone Corporation
- William James Hughes
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Force balanced rotating pressure control device
- Patent number 7,743,823
- Issue date Jun 29, 2010
- Sunstone Technologies, LLC
- William James Hughes
- Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC
Information Patent Grant
Rotating pressure control head
- Patent number 7,380,590
- Issue date Jun 3, 2008
- Sunstone Corporation
- William James Hughes
- E21 - EARTH DRILLING MINING
Information Patent Grant
Single acting reciprocating pump piston
- Patent number 4,459,899
- Issue date Jul 17, 1984
- Murl R. Richardson
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Diaphragm closure support system
- Patent number 4,145,158
- Issue date Mar 20, 1979
- Oil States Rubber Co.
- Fred G. Britton
- E02 - HYDRAULIC ENGINEERING FOUNDATIONS SOIL SHIFTING

Patents Applicationslast 30 patents

Information Patent Application
Force Balanced Rotating Pressure Control Device
- Publication number 20100200213
- Publication date Aug 12, 2010
- SUNSTONE CORPORATION
- William James Hughes
- E21 - EARTH DRILLING MINING
Information Patent Application
Force Balanced Rotating Pressure Control Device
- Publication number 20080296016
- Publication date Dec 4, 2008
- William James Hughes
- E21 - EARTH DRILLING MINING
Information Patent Application
Rotating pressure control head
- Publication number 20060037744
- Publication date Feb 23, 2006
- William James Hughes
- E21 - EARTH DRILLING MINING