J. Yen Ligh

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Diaphragm actuated pressure relief valve with pressure balanced out...
- Patent number 6,173,736
- Issue date Jan 16, 2001
- J. Yen Ligh
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Check valve with a low inertia moving part for low or high pressure...
- Patent number 5,975,130
- Issue date Nov 2, 1999
- Valve Concepts, Inc.
- J. Yen Ligh
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...
Information Patent Grant
Diaphragm/spring actuated pressure relief valve with pressure balan...
- Patent number 5,845,675
- Issue date Dec 8, 1998
- J. Yen Ligh
- F16 - ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINT...