Patents by Inventor Larry E. Knaak

Larry E. Knaak 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).

  • Squarylium dyes
    Patent number: 9090776
    Abstract: Squarylium dyes with improved design flexibility via functionalization thereof thereby yielding desirable photophysical, solubility, thermal stability, and/or light stability properties, for example. The resulting dyes are useful in optical filters and as fluorescent indicators, for example.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: July 28, 2015
    Assignee: Exciton, Inc.
    Inventors: Richard N. Steppel, Larry E. Knaak, Paul A. Cahill
  • SQUARYLIUM DYES
    Publication number: 20140061505
    Abstract: Squarylium dyes with improved design flexibility via functionalization thereof thereby yielding desirable photophysical, solubility, thermal stability, and/or light stability properties, for example. The resulting dyes are useful in optical filters and as fluorescent indicators, for example.
    Type: Application
    Filed: September 4, 2013
    Publication date: March 6, 2014
    Applicant: Exciton, Inc.
    Inventors: Richard N. Steppel, Larry E. Knaak, Paul A. Cahill