Patents by Inventor Gurdial Singh

Gurdial 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).

  • Conductive N-alkyl polyamide having units containing phosphonium sulfonate groups
    Patent number: 4035346
    Abstract: An antistatic synthetic polymer having a T.sub.g (NMR) of less than 25.degree. C., a log R.sub.s of less than 10 and containing phosphonium sulfonate groups can be used to improve the conductivity of synthetic fiber-forming polymers.
    Type: Grant
    Filed: October 22, 1976
    Date of Patent: July 12, 1977
    Assignee: E. I. Du Pont de Nemours and Co.
    Inventors: Harry Vaughn Samuelson, Gurdial Singh
  • Conductive aliphatic polyester or polyetherester having units containing phosphonium sulfonate groups
    Patent number: 4006123
    Abstract: An antistatic synthetic polymer having a T.sub.g (NMR) of less than 25.degree. C., a log R.sub.s of less than 10 and containing phosphonium sulfonate groups can be used to improve the conductivity of synthetic fiber-forming polymers.
    Type: Grant
    Filed: February 25, 1975
    Date of Patent: February 1, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Harry Vaughn Samuelson, Gurdial Singh
  • Antistatic composition containing an N-alkyl polycarbonamide and a phosphonium salt
    Patent number: 4005057
    Abstract: Conductive compositions useful in imparting antistatic properties in filaments and other articles are provided, which comprise N-alkyl polycarbonamides, polyesters or polyetheresters having a Tg (NMR) less than 25.degree. C and from 0.02 to 35 weight percent of a phosphonium salt of a phosphonate, phosphinate, or sulfonate.
    Type: Grant
    Filed: September 17, 1975
    Date of Patent: January 25, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Gurdial Singh, Richard Edward VON Rutte