Patents by Inventor Dov Shaked

Dov Shaked 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).

  • Method of making bleaching clay
    Patent number: 6365536
    Abstract: A bleaching clay having an enhanced bleaching performance in oils is produced by first beneficiating a raw clay to remove sand and thereafter conditioning and then concentrating the beneficiated clay with a pH modifier and a Lewis acid salt.
    Type: Grant
    Filed: May 5, 2000
    Date of Patent: April 2, 2002
    Assignee: Oil-Dri Corporation of America
    Inventors: Steven T. Council, Marc A. Herpfer, Dov Shaked
  • Sorptive purification for edible oils
    Patent number: 6346286
    Abstract: Pre-treatment sorbents suitable for sorptive pre-treatment of edible oils prior to bleaching are produced by mixing a clay mineral composition with a dry granular organic acid.
    Type: Grant
    Filed: April 26, 1995
    Date of Patent: February 12, 2002
    Assignee: Oil-Dri Corporation of America
    Inventors: Steven T. Council, G. Robert Goss, Dov Shaked
  • Method for selecting raw material for bleaching clay
    Patent number: 6093669
    Abstract: A process for making a bleaching clay composition useful for purification of oil is disclosed. The process involves controlled acidification of a palygorskite and smectite clay mineral with sulfuric acid. The clay mineral starting material exhibits, in an aqueous slurry, an electrical conductivity of at least about 50 microSiemens per centimeter.
    Type: Grant
    Filed: July 21, 1998
    Date of Patent: July 25, 2000
    Assignee: Oil-Dri Corporation of America
    Inventors: Amos Banin, Dov Shaked, Marc A. Herpfer, William F. Moll
  • Activated clay composition and method
    Patent number: 5908500
    Abstract: High performance acid activated clays suitable for bleaching oil are produced by contacting an intercalating clay mineral with a strong acid in a polar organic liquid.
    Type: Grant
    Filed: August 6, 1997
    Date of Patent: June 1, 1999
    Assignee: Oil-Dri Corporation of America
    Inventors: David D. Brooks, Darlene M. Hansen, Dov Shaked
  • Process for selecting raw material and making a bleaching clay
    Patent number: 5783511
    Abstract: A process for making a bleaching clay composition useful for purification of oil is disclosed. The process of involves controlled acidification of a palygorskite--smectite clay mineral with sulfuric acid.
    Type: Grant
    Filed: November 30, 1995
    Date of Patent: July 21, 1998
    Assignee: Oil-Dri Corporation of America
    Inventors: Amos Banin, Dov Shaked, Marc A. Herpfer, William F. Moll
  • Clay activation with metal salts
    Patent number: 5749955
    Abstract: High performance activated clays suitable for bleaching oil are produced by mixing a clay mineral with a metal salt that is a Lewis acid. Mixtures of such metal salts can be used as well.
    Type: Grant
    Filed: June 28, 1995
    Date of Patent: May 12, 1998
    Assignee: Oil-Dri Corporation of America
    Inventors: Dov Shaked, Amos Banin, William F. Moll, Iwona M. Aguilar