Patents by Inventor Lachhman Wadhwa

Lachhman Wadhwa 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).

  • Internal lubricant for glass reinforced polyarylene sulfide
    Patent number: 5008316
    Abstract: Polyarylene sulfide molding compositions are provided with improved mold release properties by the inclusion of an internal lubricant comprising stearyl erucamide.
    Type: Grant
    Filed: September 1, 1989
    Date of Patent: April 16, 1991
    Assignee: Hoechst Celanese Corporation
    Inventors: Lachhman Wadhwa, Andrew M. Steurer
  • Fabrication of high performance polybenzimidazole films
    Patent number: 4927909
    Abstract: The instant invention involves a process for producing continuous polybenzimidazole films. The process is comprised of the following steps:(a) preparing a solvent solution of a polybenzimidazole polymer;(b) continuously casting the solution upon a support;(c) evaporating a sufficient amount of the solvent to form a self-supporting film in an oven;(d) washing the film in a nonsolvent;(e) removing the film from the support; and(f) continuously collecting the continuous film.
    Type: Grant
    Filed: September 18, 1987
    Date of Patent: May 22, 1990
    Assignee: Hoechst Celanese Corp.
    Inventors: Lachhman Wadhwa, Michel Bitritto, Edward J. Powers