Patents by Inventor Robert N. Howard

Robert N. Howard 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).

  • Abrasive article and processes for producing it
    Patent number: 5251802
    Abstract: An abrasive article comprising a coated abrasive bonded to a substrate by means of a metallic adhesive and a method for producing the abrasive article by heating.
    Type: Grant
    Filed: June 12, 1992
    Date of Patent: October 12, 1993
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Wesley J. Bruxvoort, Robert N. Howard
  • Abrasive article and processes for producing it
    Patent number: 5127197
    Abstract: An abrasive article comprising a coated abrasive bonded to a substrate by means of a metallic adhesive and a method for producing the abrasive article by heating.
    Type: Grant
    Filed: April 25, 1991
    Date of Patent: July 7, 1992
    Inventors: Wesley J. Brukvoort, Robert N. Howard
  • Encapsulated abrasive grains and articles made therefrom
    Patent number: 4112631
    Abstract: A capsule containing fine abrasive grains dispersed in a liquid or low melting solid grinding aid can be substituted for conventional abrasive polishing grains. A novel coated abrasive structure is made by bonding such capsules to a backing sheet.
    Type: Grant
    Filed: May 29, 1973
    Date of Patent: September 12, 1978
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert N. Howard