Patents by Inventor Azza A. Elattar

Azza A. Elattar 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).

  • Active mass for making organohalosilanes
    Patent number: 5061672
    Abstract: The active mass is produced by first forming a contact mass of particulate silicon metal and particulate copper catalyst and then heating the contact mass at a temperature of between 250.degree.-335.degree. C. in the presence of methylchloride to form the active mass. Zinc can be added to the contact mass.
    Type: Grant
    Filed: January 30, 1990
    Date of Patent: October 29, 1991
    Assignee: Elkem Metals Company
    Inventor: Azza A. Elattar
  • Preparation of a catalyst for composition for the production of organohalosilanes
    Patent number: 4824984
    Abstract: There is provided a method and a catalyst for the direct production of organohalosilanes from elemental silicon and an alkylhalide. The catalytic material is characterized by the presence therein of zinc, the source of zinc in said catalyst being selected from the group consisting of zinc carbonate, zinc formate, zinc acetate, zinc vinyl acetate, zinc propionate, zinc butyrate, zinc beta-chlorobutyrate and zinc gamma-chlorobutyrate. These sources of zinc overcome problems encountered with zinc metal and zinc halides, commonly used as sources of zinc.
    Type: Grant
    Filed: August 20, 1987
    Date of Patent: April 25, 1989
    Assignee: SCM Metal Products, Inc.
    Inventors: Erhard Klar, Azza Elattar
  • Process for manufacturing porous slag
    Patent number: 4545797
    Abstract: Inert slag is calcined and treated with aqueous base or acid to yield product characterized by high surface area.
    Type: Grant
    Filed: June 13, 1983
    Date of Patent: October 8, 1985
    Assignee: Texaco Inc.
    Inventor: Azza A. Elattar
  • Method of preparing pillared, interlayered clay catalyst using soluble carbohydrates
    Patent number: 4515901
    Abstract: An interlayered pillared clay is formed by the steps of mixing a clay with a polar solvent, a soluble carbohydrate, and a soluble pillaring agent. The mixture is then heated to form the interlayered pillared clay. Useful clays are smectites such as montmorillonite.
    Type: Grant
    Filed: November 17, 1983
    Date of Patent: May 7, 1985
    Assignee: Texaco Inc.
    Inventor: Azza A. Elattar