Patents by Inventor Pritam Singh

Pritam Singh 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).

  • Flame-retardant carpet and composition for preparing the same
    Patent number: 4061810
    Abstract: Combinations of certain hydroxycarboxylic acids with certain metal oxides and hydroxides provide unexpectedly enhanced flame retardancy to carpets, said flame retardancy being durable to usual carpet cleaning procedures.
    Type: Grant
    Filed: September 27, 1976
    Date of Patent: December 6, 1977
    Assignee: Allied Chemical Corporation
    Inventors: Pritam Singh Minhas, Bernard Sukornick
  • Schiff bases derived from phenanthrene-9,10-diamines and ortho-hydroxy aldehydes
    Patent number: 3980640
    Abstract: Novel Schiff bases are prepared by condensation of phenanthrene-9,10-diamines with o-hydroxy aldehydes. The bases can be chelated with metals to form compounds useful as yellow pigments.
    Type: Grant
    Filed: June 13, 1975
    Date of Patent: September 14, 1976
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Pritam Singh Dhaliwal