Charles C. Hu

Person

San Jose, CA, US

People

Patents Grantslast 30 patents

Information Patent Grant
Zero crossing circuit for a relay
- Patent number 5,804,991
- Issue date Sep 8, 1998
- The Watt Stopper
- Charles C. Hu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Wall-mounted switch
- Patent number D380452
- Issue date Jul 1, 1997
- The Watt Stopper
- Jerome M. Mix
- D13 - Equipment for production, distribution, or transformation of energy
Information Patent Grant
Zero crossing circuit for a relay
- Patent number 5,640,113
- Issue date Jun 17, 1997
- The Watt Stopper
- Charles C. Hu
- H03 - BASIC ELECTRONIC CIRCUITRY
Information Patent Grant
Moveable desktop load controller
- Patent number 5,598,042
- Issue date Jan 28, 1997
- The Watt Stopper
- Jerome M. Mix
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Moveable desktop light controller
- Patent number 5,455,487
- Issue date Oct 3, 1995
- The Watt Stopper
- Jerome M. Mix
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Apparatus and method for adjusting lights according to the level of...
- Patent number 5,406,173
- Issue date Apr 11, 1995
- The Watt Stopper
- Jerome M. Mix
- H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
Information Patent Grant
Dual technology motion sensor
- Patent number 5,189,393
- Issue date Feb 23, 1993
- The Watt Stopper Inc.
- Charles C. Hu
- G08 - SIGNALLING
Information Patent Grant
Method and apparatus for refracting light to an optical detector
- Patent number 5,124,546
- Issue date Jun 23, 1992
- The Watt Stopper
- Charles C. Hu
- G08 - SIGNALLING
Information Patent Grant
Shutoff circuit for sensor controlled switch
- Patent number 5,124,566
- Issue date Jun 23, 1992
- The Watt Stopper
- Charles C. Hu
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Low voltage motion sensor for activating a high voltage load
- Patent number 4,820,938
- Issue date Apr 11, 1989
- The Watt Watcher, Inc.
- Jerome M. Mix
- G08 - SIGNALLING
Information Patent Grant
Occupancy sensor
- Patent number D294231
- Issue date Feb 16, 1988
- The Watt Watcher, Inc.
- Maclyn C. Cameron
- D10 - Measuring, testing, or signalling instruments
Information Patent Grant
Occupancy sensor
- Patent number 4,661,720
- Issue date Apr 28, 1987
- The Watt Watcher, Inc.
- Maclyn C. Cameron
- G01 - MEASURING TESTING

Charles C. Hu

Person

Patents Grantslast 30 patents

Zero crossing circuit for a relay

Wall-mounted switch

Zero crossing circuit for a relay

Moveable desktop load controller

Moveable desktop light controller

Apparatus and method for adjusting lights according to the level of...

Dual technology motion sensor

Method and apparatus for refracting light to an optical detector

Shutoff circuit for sensor controlled switch

Low voltage motion sensor for activating a high voltage load

Occupancy sensor

Occupancy sensor