Yanwei Cen

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Houston, TX, US

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Patents Grantslast 30 patents

Information Patent Grant
Systems and methods for assisting in reducing the spread of fire, s...
- Patent number 10,323,411
- Issue date Jun 18, 2019
- Rectorseal, LLC
- Eva Ackerman
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Grant
Use of liquid flushing composition in cleaning a heat exchanger
- Patent number 8,734,589
- Issue date May 27, 2014
- The Rectorseal Corporation
- Eva Ackerman
- B08 - CLEANING
Information Patent Grant
Method for cleaning a heat exchanger
- Patent number 8,298,345
- Issue date Oct 30, 2012
- The Rectorseal Corporation
- Eva Ackerman
- B08 - CLEANING

Patents Applicationslast 30 patents

Information Patent Application
SYSTEMS AND METHODS FOR ASSISTING IN REDUCING THE SPREAD OF FIRE, S...
- Publication number 20200199867
- Publication date Jun 25, 2020
- RectorSeal, LLC
- Eva Ackerman
- E04 - BUILDING
Information Patent Application
SYSTEMS AND METHODS FOR ASSISTING IN REDUCING THE SPREAD OF FIRE, S...
- Publication number 20190177970
- Publication date Jun 13, 2019
- RECTORSEAL, LLC
- Eva Ackerman
- A62 - LIFE-SAVING FIRE-FIGHTING
Information Patent Application
SYSTEMS AND METHODS FOR ASSISTING IN REDUCING THE SPREAD OF FIRE, S...
- Publication number 20180291619
- Publication date Oct 11, 2018
- RectorSeal, LLC
- Eva Ackerman
- E04 - BUILDING
Information Patent Application
SYSTEMS AND METHODS FOR ASSISTING IN REDUCING THE SPREAD OF FIRE, S...
- Publication number 20170260741
- Publication date Sep 14, 2017
- RectorSeal, LLC
- Eva Ackerman
- E04 - BUILDING
Information Patent Application
Cleaning composition for tankless water heater
- Publication number 20100298194
- Publication date Nov 25, 2010
- Eva Ackerman
- C02 - TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE