Qihua Zhao

Follow

Person

Mississauga, CA

People

Patents Grantslast 30 patents

Information Patent Grant
Advanced inrush/transient current limit and overload/short circuit...
- Patent number 7,408,755
- Issue date Aug 5, 2008
- Honeywell International Inc.
- Yang Ye
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Multi-stage dynamic braking resistor network
- Patent number 7,012,392
- Issue date Mar 14, 2006
- Honeywell International Inc.
- That Nguyen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Active filter for multi-phase AC power system
- Patent number 6,861,897
- Issue date Mar 1, 2005
- Honeywell International Inc.
- Louis Cheng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Active filter and method for suppressing current harmonics
- Patent number 6,469,485
- Issue date Oct 22, 2002
- Honeywell International Inc.
- Louis Cheng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER

Patents Applicationslast 30 patents

Information Patent Application
Multi-stage dynamic braking resistor network
- Publication number 20050174081
- Publication date Aug 11, 2005
- That Nguyen
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Application
ACTIVE FILTER FOR MULTI-PHASE AC POWER SYSTEM
- Publication number 20050035815
- Publication date Feb 17, 2005
- Louis Cheng
- Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMA...
Information Patent Application
Active filter and method for suppressing current harmonics
- Publication number 20020043968
- Publication date Apr 18, 2002
- Louis Cheng
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER