Ching-Cheng Ma

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Pingtung County, TW

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Patents Grantslast 30 patents

Information Patent Grant
Soft start circuit for a forward/reverse rotation fan
- Patent number 8,907,607
- Issue date Dec 9, 2014
- ADDA Corp.
- Ching-Cheng Ma
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Auto power-off and actuation circuit for a fan
- Patent number 8,462,470
- Issue date Jun 11, 2013
- ADDA Corp.
- Ching-Cheng Ma
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Fan failure detector
- Patent number 8,421,476
- Issue date Apr 16, 2013
- Adda Corporation
- Ching-Cheng Ma
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Grant
Control circuit for fan operating
- Patent number 7,646,162
- Issue date Jan 12, 2010
- Adda Corporation
- Ching-Cheng Ma
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Motor control circuit for forward/reverse rotation
- Patent number 7,348,740
- Issue date Mar 25, 2008
- Adda Corporation
- Ching-Cheng Ma
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Fan Failure Detector
- Publication number 20120038305
- Publication date Feb 16, 2012
- Ching-Cheng MA
- F04 - POSITIVE DISPLACEMENT MACHINES FOR LIQUIDS PUMPS FOR LIQUIDS OR ELASTIC...
Information Patent Application
Auto Power-Off And Actuation Circuit for a Fan
- Publication number 20120034065
- Publication date Feb 9, 2012
- Ching-Cheng MA
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
Control circuit for fan operating
- Publication number 20090034943
- Publication date Feb 5, 2009
- ADDA CORPORATION.
- Ching-Cheng Ma
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
MOTOR CONTROL CIRCUIT FOR FORWARD/REVERSE ROTATION
- Publication number 20080036405
- Publication date Feb 14, 2008
- ADDA CORPORATION.
- Ching-Cheng Ma
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER