Patents by Inventor Cathrin G. Kirchhoefer

Cathrin G. Kirchhoefer 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).

  • Biodegradable and/or bioabsorbable thermoplastic polyurethanes
    Patent number: 11525028
    Abstract: The thermoplastic polyurethane (TPU) compositions described herein have biodegradable and/or bioabsorbable hard and soft segments. The TPU hard segment can be formed from a polyisocyanate and a 2,5-substituted diketopiperazine.
    Type: Grant
    Filed: August 6, 2020
    Date of Patent: December 13, 2022
    Assignee: Lubrizol Advanced Materials, Inc.
    Inventors: Cathrin G. Kirchhoefer, Andrew P. Dove, Anthony J. Walder
  • Biodegradable And/Or Bioabsorbable Thermoplastic Polyurethanes
    Publication number: 20200362091
    Abstract: The thermoplastic polyurethane (TPU) compositions described herein have biodegradable and/or bioabsorbable hard and soft segments. The TPU hard segment can be formed from a polyisocyanate and a 2,5-substituted diketopiperazine.
    Type: Application
    Filed: August 6, 2020
    Publication date: November 19, 2020
    Inventors: Cathrin G. Kirchhoefer, Andrew P. Dove, Anthony J. Walder
  • Biodegradable And/Or Bioabsorbable Thermoplastic Polyurethanes
    Publication number: 20190389997
    Abstract: The thermoplastic polyurethane (TPU) compositions described herein have biodegradable and/or bioabsorbable hard and soft segments. The TPU hard segment can be formed from a polyisocyanate and a 2,5-substituted diketopiperazine.
    Type: Application
    Filed: March 31, 2017
    Publication date: December 26, 2019
    Inventors: Cathrin G. Kirchhoefer, Andrew P. Dove, Anthony J. Walder