Patents by Inventor Mark A. Siem

Mark A. Siem 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).

  • Use of an indicator as a marker in foam concentrates
    Patent number: 10786696
    Abstract: Provided are fire-fighting foam concentrate compositions incorporating multiple dye indicator agents, fire-fighting foams formed from said compositions, and to methods for evaluating fire-fighting foam concentrates. The compositions are useful as a complex anti-counterfeiting system and also allow for the differentiation of different types of authentic concentrates.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: September 29, 2020
    Assignee: Tyco Fire Products LP
    Inventors: John P. Libal, Mark A. Siem