Patents by Inventor Kewal K. Likhyani

Kewal K. Likhyani 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).

  • Hollow filament product
    Patent number: 4446024
    Abstract: A three-dimensional network of rigid, porous hollow filament of inorganic material is provided which has high flux capability in treating fluid for separation purposes. The network is made by coating a continuous combustible core with a paste of the inorganic material, fabricating the resultant coated core into the network, followed by firing the coated core to burn off the core and sinter the coating to rigid porous hollow filament.
    Type: Grant
    Filed: December 13, 1979
    Date of Patent: May 1, 1984
    Assignee: E. I. Du Pont de Nemours & Company
    Inventors: Richard A. Baker, George D. Forsythe, Kewal K. Likhyani, Robert E. Roberts, David C. Robertson
  • Spunlaced fabric containing elastic fibers
    Patent number: 4426420
    Abstract: Novel hydraulically entangled spunlaced fabrics and an improved process for making such fabrics composed of at least two types of staple fibers are provided. Elastomeric staple fibers which behave as ordinary staple fibers until heat treated are included in the hydraulically entangled fabric. Upon heat treatment, the elastomeric fibers become elastic and impart improved stretch and resilience properties to the fabric.
    Type: Grant
    Filed: September 17, 1982
    Date of Patent: January 17, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Kewal K. Likhyani
  • Separation device of rigid porous inorganic hollow filament and use thereof
    Patent number: 4105548
    Abstract: A three-dimensional network of rigid, porous hollow filament of inorganic material is provided which has high flux capability in treating fluid for separation purposes. The network is made by coating a continuous combustible core with a paste of the inorganic material, fabricating the resultant coated core into the network, followed by firing the coated core to burn off the core and sinter the coating to rigid porous hollow filament.
    Type: Grant
    Filed: February 22, 1977
    Date of Patent: August 8, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Richard A. Baker, George D. Forsythe, Kewal K. Likhyani, Robert E. Roberts, David C. Robertson