Patents by Inventor Raffat S. Sultana

Raffat S. Sultana 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).

  • Poly (vinylamine) - base superabsorbent gels and method of manufacturing the same
    Patent number: 6603055
    Abstract: Bi-component superabsorbent materials are disclosed. The superabsorbent materials comprise a mixture of about 20% to about 40%, by weight, poly(vinylamine) polymer or other basic resin and about 60% to about 80%, by weight of an acidic water-absorbing polymer, like polyacrylic acid.
    Type: Grant
    Filed: December 22, 2000
    Date of Patent: August 5, 2003
    Assignee: BASF Aktiengesellschaft
    Inventors: Michael A. Mitchell, Thomas W. Beihoffer, Raffat S. Sultana
  • Poly (vinylamine) - base superabsorbent gels and method of manufacturing the same
    Publication number: 20010007064
    Abstract: Bi-component superabsorbent materials are disclosed. The superabsorbent materials comprise a mixture of about 20% to about 40%, by weight, poly-(vinylamine) polymer or other basic resin and about 60% to about 80%, by weight of an acidic water-absorbing polymer, like polyacrylic acid.
    Type: Application
    Filed: December 22, 2000
    Publication date: July 5, 2001
    Inventors: Michael A. Mitchell, Thomas W. Beihoffer, Raffat S. Sultana