Patents by Inventor Larry Richard Krepski

Larry Richard Krepski 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).

  • Functional polymer with a pendant color changing indicator
    Patent number: 8329851
    Abstract: A functionalized polymer is disclosed that comprises the reaction product of a polymer having one or more pendant reactive functional groups and a color changing indictor having a co-reactive functional group. The co-reactive functional group of the color changing is able to react with the reactive functional group of the polymer to form a covalent bond. Therefore, the color changing indicator is pendant from the polymer. The color changing indicator maintains its ability to produce a visually discernable color change in the presence of an associated stimulus.
    Type: Grant
    Filed: June 27, 2008
    Date of Patent: December 11, 2012
    Assignee: 3M Innovative Properties Company
    Inventors: Yifan Zhang, Yi He, Diane R. Wolk, Mark W. Nelson, Larry Richard Krepski, Stephen Richard Hartshorn, Douglas Eugene Weiss
  • Functional Polymer With Pendant Color Changing Indicator
    Publication number: 20110077358
    Abstract: A functionalized polymer is disclosed that comprises the reaction product of a polymer having one or more pendant reactive functional groups and a color changing indictor having a co-reactive functional group. The co-reactive functional group of the color changing is able to react with the reactive functional group of the polymer to form a covalent bond. Therefore, the color changing indicator is pendant from the polymer. The color changing indicator maintains its ability to produce a visually discernable color change in the presence of an associated stimulus.
    Type: Application
    Filed: June 27, 2008
    Publication date: March 31, 2011
    Inventors: Yifan Zhang, Yi He, Diane R. Wolk, Mark W. Nelson, Larry Richard Krepski, Stephen Richard Hartshorn, Douglas Eugend Weiss