Patents by Inventor Hamid Alafandi

Hamid Alafandi 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).

  • Hydrothermally stable catalysts containing ammonium faujasite zeolites
    Patent number: 4085069
    Abstract: Catalysts containing a matrix and an ammonium zeolite of the faujasite type produced by exchanging the zeolite whose exchange sites are substantially entirely occupied by Na cations, with an ammonium salt solution to exchange substantially all of the Na cations with NH.sub.4 cations with substantially no impairment of crystallinity by a control of the relation of the equivalents of NH.sub.4 in the solution to equivalents of Na in the zeolite.
    Type: Grant
    Filed: August 27, 1976
    Date of Patent: April 18, 1978
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires
  • Ammonium faujasite zeolites
    Patent number: 4058484
    Abstract: A process of producing an ammonium zeolite of the faujasite type in which a zeolite of the faujasite type whose exchange sites are substantially entirely occupied by Na cations, is treated with an ammonium salt solution to exchange substantially all of the Na cations with NH.sub.4 cations with substantially no impairment of crystallinity by a control of the relation of the equivalents of NH.sub.4 in the solution to equivalents of Na in the zeolite.
    Type: Grant
    Filed: September 9, 1976
    Date of Patent: November 15, 1977
    Assignee: Filtrol Corporation
    Inventors: Hamid Alafandi, Dennis Stamires