Patents by Inventor Danielle Anne French

Danielle Anne French 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).

  • Preparation and purification of hydroxylamine stabilizers
    Patent number: 6867327
    Abstract: The invention relates to the preparation of ultra-high purity 1,2-diaminocyclohexanetetraacetic acid being essentially free of unwanted metal and metal ion contaminants and its use as a stabilizer for ultra-high purity hydroxylamine compounds used extensively in the production of high premium electronic components.
    Type: Grant
    Filed: December 16, 2002
    Date of Patent: March 15, 2005
    Assignee: BASF Aktiengesellschaft
    Inventors: Irl E. Ward, Danielle Anne French
  • Preparation and purification of hydroxylamine stabilizers
    Publication number: 20040116735
    Abstract: The invention relates to the preparation of ultra-high purity 1,2-diaminocyclohexanetetraacetic acid being essentially free of unwanted metal and metal ion contaminants and its use as a stabilizer for ultra-high purity hydroxylamine compounds used extensively in the production of high premium electronic components.
    Type: Application
    Filed: December 16, 2002
    Publication date: June 17, 2004
    Inventors: Irl E. Ward, Danielle Anne French
  • Cutting and lubricating composition for use with a wire cutting apparatus
    Patent number: 6602834
    Abstract: The invention provides a cutting and lubricating composition with abrasive particles for cutting hard and brittle workpieces with a wire saw or other cutting or grinding tool. The composition provides electrostatic and steric repulsion between the abrasive particles to maintain the particles in suspension without forming hard settled cakes from suspension “fall-out”.
    Type: Grant
    Filed: August 10, 2000
    Date of Patent: August 5, 2003
    Assignee: PPT Resaerch, Inc.
    Inventors: Irl B. Ward, Amy Ann Heller, Danielle Anne French, Susan Jane Broadway