Liren Zhao

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Mansfield, OH, US

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Patents Grantslast 30 patents

Information Patent Grant
High temperature PTC device and conductive polymer composition
- Patent number 6,090,313
- Issue date Jul 18, 2000
- Therm-O-Disc Inc.
- Liren Zhao
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Conductive polymer materials for high voltage PTC devices
- Patent number 6,074,576
- Issue date Jun 13, 2000
- Therm-O-Disc, Incorporated
- Liren Zhao
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High temperature PTC device and conductive polymer composition
- Patent number 5,985,182
- Issue date Nov 16, 1999
- Therm-O-Disc, Incorporated
- Liren Zhao
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
High temperature PTC device comprising a conductive polymer composi...
- Patent number 5,837,164
- Issue date Nov 17, 1998
- Therm-O-Disc, Incorporated
- Liren Zhao
- H01 - BASIC ELECTRIC ELEMENTS