Patents by Inventor Roger E. Frech

Roger E. Frech 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).

  • Conductive polyamine-based electrolyte
    Patent number: 7238451
    Abstract: The present invention is directed to a polymer electrolyte comprising amine groups dispersed throughout the polymer backbone, including various poly(ethylenimine)-based polymers, which enable ionic movement for use in various applications, including for example batteries, fuel cells, sensors, supercapacitors and electrochromic devices. The present invention is further directed to a method for preparing such polymer electrolytes.
    Type: Grant
    Filed: December 31, 2001
    Date of Patent: July 3, 2007
    Assignee: The Board of Regents of the University of Oklahoma
    Inventors: Roger E. Frech, Daniel T. Glatzhofer
  • Conductive polyamine-based electrolyte
    Publication number: 20020160271
    Abstract: The present invention is directed to a polymer electrolyte comprising amine groups dispersed throughout the polymer backbone, including various poly(ethylenimine)-based polymers, which enable ionic movement for use in various applications, including for example batteries, fuel cells, sensors, supercapacitors and electrochromic devices. The present invention is further directed to a method for preparing such polymer electrolytes.
    Type: Application
    Filed: December 31, 2001
    Publication date: October 31, 2002
    Applicant: The Board of Reagents of the University of Oklahoma
    Inventors: Roger E. Frech, Daniel T. Glatzhofer
  • Mesostructural metal oxide materials useful as an intercalation cathode or anode
    Patent number: 5958624
    Abstract: The present invention provides mesostructural metal oxide materials that can be employed in lithium ion rechargeable batteries as intercalation electrodes. The mesostructural metal oxide materials of the present invention maintain their structural integrity during intercalation, are reversible and exhibit increased electrochemical capacity. The use of such mesostructural metal oxides in rechargeable batteries is also described herein.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: September 28, 1999
    Assignee: Research Corporation Technologies, Inc.
    Inventors: Roger E. Frech, Xulong Zhang
  • Method of making spinel LI2MN204 compound
    Patent number: 5601796
    Abstract: A method of producing spinel Li.sub.2 Mn.sub.2 O.sub.4 from LiMn.sub.2 O.sub.4, lithium metal and graphite. A mixture of black LiMn.sub.2 O.sub.4, lithium metal and carbon powders is prepared at a 1:1 molar ratio of Li to LiMn.sub.2 O.sub.4 and a 1:9 weight ratio of carbon to LiMn.sub.2 O.sub.4. Then, the mixture is heated at a temperature between 170.degree. C. and 200.degree. C. until spinel Li.sub.2 Mn.sub.2 O.sub.4 is produced. Alternatively, Li and carbon may be reacted together to produce LiC.sub.6 or LiC.sub.12. Then the LiC.sub.x may be mixed and heated with LiMn.sub.2 O.sub.4 to produce spinel Li.sub.2 Mn.sub.2 O.sub.4.
    Type: Grant
    Filed: November 22, 1995
    Date of Patent: February 11, 1997
    Assignee: The Board of Regents of the University of Oklahoma
    Inventors: Roger E. Frech, Weiwei Huang