Patents by Inventor Cindy Fang

Cindy Fang has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Inverse emulsion polymers as lost circulation material
    Publication number: 20070012447
    Abstract: A sealant composition comprising an inverse emulsion polymer and methods of servicing a wellbore using the same are disclosed. In one embodiment, a method of servicing a wellbore that penetrates a subterranean formation is disclosed. The method comprises placing a sealant composition comprising an inverse emulsion polymer into the wellbore to reduce a loss of fluid to the subterranean formation during placement of the fluid in the wellbore.
    Type: Application
    Filed: July 13, 2005
    Publication date: January 18, 2007
    Inventors: Cindy Fang, Carl Thaemlitz, Eric Davidson
  • Method and biodegradable super absorbent composition for preventing or treating lost circulation
    Publication number: 20060094604
    Abstract: A lost circulation material and method for treatment employing the material is provided that has particular utility in offshore applications because the material may be used with saltwater or brine, as well as with fresh water, and is biodegradable. The material comprises a biodegradable superabsorbent polysaccharide polymer that is preferably uncrosslinked and non-ionic and that is capable of absorbing multiple times its weight in sea water.
    Type: Application
    Filed: November 3, 2004
    Publication date: May 4, 2006
    Inventors: Cindy Fang, Carl Thaemlitz
  • Water heater
    Patent number: D905834
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: December 22, 2020
    Assignee: Zhongshan Chongde Electric Appliance Industry Co., Ltd.
    Inventor: Cindy Fang