Patents by Inventor Doo-weon Lee

Doo-weon Lee 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).

  • Polymer electrolyte membrane and fuel cell using the same
    Publication number: 20060172170
    Abstract: A polymer electrolyte membrane includes a poly(benzoxazole) polymer doped with at least one acid. The polymer electrolyte membrane is manufactured by impregnating poly(benzoxazole) with an acid and has better ionic conductivity at high temperatures and better mechanical properties than a conventional poly(benzoxazole) polymer electrolyte membrane. In addition, the polymer electrolyte membrane has equivalent thermal stability to a conventional polymer electrolyte membrane.
    Type: Application
    Filed: January 27, 2006
    Publication date: August 3, 2006
    Applicant: Samsung SDI Co., Ltd.
    Inventors: Chung-kun Cho, Doo-weon Lee, Hee-young Sun