Patents by Inventor Leila Z. Liepins

Leila Z. Liepins 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).

  • Process for introducing electrical conductivity into high-temperature polymeric materials
    Patent number: 5271870
    Abstract: High-temperature electrically conducting polymers. The in situ reactions: AgNO.sub.3 +RCHO.fwdarw.Ag.degree.+RCOOH and R.sub.3 M.fwdarw.M.degree.+3R, where M=Au or Pt have been found to introduce either substantial bulk or surface conductivity in high-temperature polymers. The reactions involving the R.sub.3 M were caused to proceed thermally suggesting the possibility of using laser means for initiating such reactions in selected areas or volumes of the polymeric materials. The polymers successfully investigated to date are polyphenylquinoxaline, polytolylquinoxaline, polyquinoline, polythiazole, and pyrrone.
    Type: Grant
    Filed: June 27, 1989
    Date of Patent: December 21, 1993
    Assignee: The United States of America as represented by the Department of Energy
    Inventors: Raimond Liepins, Betty S. Jorgensen, Leila Z. Liepins
  • Process for introducing electrical conductivity into high-temperature polymeric materials
    Patent number: 4876032
    Abstract: High-temperature electrically conducting polymers. The in situ reactions: AgNO.sub.3 +RCHO.fwdarw.AG.sup.0 +RCOOH and R.sub.3 M.fwdarw.M.sup.0 3R, where M=Au or Pt have been found to introduce either substantial bulk or surface conductivity in high-temperature polymers. The reactions involving the R.sub.3 M were caused to proceed thermally suggesting the possibility of using laser means for initiating such reactions in selected areas or volumes of the polymeric materials. The polymers successfully investigated to date are polyphenylquinoxaline, polytolylquinoxaline, polyquinoline, polythiazole, and pyrrone.
    Type: Grant
    Filed: August 27, 1987
    Date of Patent: October 24, 1989
    Assignee: The United States of America as represented by the United States Department of Energy
    Inventors: Raimond Liepins, Betty S. Jorgensen, Leila Z. Liepins