Patents by Inventor Poovatholil F. Francis

Poovatholil F. Francis 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).

  • Multi-layer non-identical catalyst on metal substrate by electrophoretic deposition
    Patent number: 6071850
    Abstract: A method for producing by electrophoretic deposition multi-layer, polyfunctional, catalyst members for use in catalytic converters having a plurality of suitably porous and adherent catalyst support coatings of substantially uniform thickness, a plurality of non-identical catalytic agents imbued therein/on, and a flexible metal substrate, are disclosed. Such process involves maintaining electrical interaction between a metal substrate previously coated with catalyst-catalyst support material, the power source, and the electrodes disposed in the electrophoretic deposition ("EPD") cell containing a slurry of a second catalyst support material and a second catalyst composition non-identical to that found in the first catalytically-active layer.
    Type: Grant
    Filed: April 17, 1998
    Date of Patent: June 6, 2000
    Assignee: Engelhard Corporation
    Inventors: Semyon D. Friedman, Martin B. Sherwin, Rasto Brezny, Poovatholil F. Francis
  • Multi-layer non-identical catalyst on metal substrate by electrophoretic deposition
    Patent number: 5795456
    Abstract: A method for producing by electrophoretic deposition multi-layer, polyfunctional, catalyst members for use in catalytic converters having a plurality of suitably porous and adherent catalyst support coatings of substantially uniform thickness, a plurality of non-identical catalytic agents imbued therein/on, and a flexible metal substrate, are disclosed. Such process involves maintaining electrical interaction between a metal substrate previously coated with catalyst-catalyst support material, the power source, and the electrodes disposed in the electrophoretic deposition ("EPD") cell containing a slurry of a second catalyst support material and a second catalyst composition non-identical to that found in the first catalytically-active layer.
    Type: Grant
    Filed: February 13, 1996
    Date of Patent: August 18, 1998
    Assignee: Engelhard Corporation
    Inventors: Semyon D. Friedman, Martin B. Sherwin, Rasto Brezny, Poovatholil F. Francis