Patents by Inventor Yusuf M. F. Marikar

Yusuf M. F. Marikar 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).

  • Electrically conductive thermally stabilized acrylic fibrous material and process for preparing same
    Patent number: 4781971
    Abstract: An electrically conductive fibrous material and a process for preparing the same from a thermally stabilized acrylic fibrous material are provided. The thermally stabilized acrylic fibrous material is first contacted with cuprous ions to produce a cuprous ion-impregnated fibrous material, and subsequently is subjected to a sulfiding agent capable of sulfiding cuprous ions, and preferably washed, to produce thermally stabilized acrylic fibrous material having covellite copper sulfide in association therewith. Also provided are electrically conductive composites and a process for preparing the same by incorporating the fibrous material prepared in accordance with the process within a substantially continuous polymeric matrix.
    Type: Grant
    Filed: August 7, 1987
    Date of Patent: November 1, 1988
    Assignee: Hoechst Celanese Corporation
    Inventors: Yusuf M. F. Marikar, Michael M. Besso
  • Electrically conductive thermally stabilized acrylic fibrous material and process for preparing same
    Patent number: 4746541
    Abstract: An electrically conductive fibrous material and a process for preparing the same from a thermally stabilized acrylic fibrous material are provided. The thermally stabilized acrylic fibrous material is first contacted with cuprous ions to produce a cuprous ion-impregnated fibrous material, and subsequently is subjected to a sulfiding agent capable of sulfiding cuprous ions, and preferably washed, to produce thermally stabilized acrylic fibrous material having covellite copper sulfide in association therewith. Also provided are electrically conductive composites and a process for preparing the same by incorporating the fibrous material prepared in accordance with the process within a substantially continuous polymeric matrix.
    Type: Grant
    Filed: December 16, 1985
    Date of Patent: May 24, 1988
    Assignee: Hoechst Celanese Corporation
    Inventors: Yusuf M. F. Marikar, Michael M. Besso