Patents by Inventor A. Brenton Crawford

A. Brenton Crawford 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).

  • Sprinkler system antifreeze compositions and methods
    Patent number: 11285349
    Abstract: An antifreeze composition and a sprinkler system containing the antifreeze composition are described. Examples include aqueous antifreeze compositions containing relatively low amounts of glycerin and/or glycols, and which further include additives that are relatively non-flammable compared to glycerin and glycols. The additives are generally compatible with each other in the antifreeze compositions. Examples of the antifreeze compositions are typically relatively non-flammable, have low electrical conductivity and low corrosivity, and are compatible with CPVC.
    Type: Grant
    Filed: October 7, 2020
    Date of Patent: March 29, 2022
    Assignee: TFS HOLDINGS, LLC
    Inventor: A. Brenton Crawford