Patents by Inventor Mark R. Ennis

Mark R. Ennis 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).

  • Process for the manufacture of endless coated abrasive articles
    Patent number: 5529590
    Abstract: A method for making a spirally wound endless coated abrasive belt comprising an abrasive layer bonded to a backing laminate material comprising a flexible support and a hot-melt adhesive layer.
    Type: Grant
    Filed: May 19, 1994
    Date of Patent: June 25, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Mark R. Ennis, Robert M. Burgess
  • Method for making coated abrasive belts
    Patent number: 5470362
    Abstract: This invention provides a method for making a coated abrasive belt having a backing comprising a hot-melt adhesive throughout the length of the belt. The splice of the coated abrasive belt made by the method has substantially the same thickness, density, and flexibility as the remainder of the belt.
    Type: Grant
    Filed: May 26, 1994
    Date of Patent: November 28, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Ian Gorsuch, Mark R. Ennis, Robert M. Burgess
  • Abrasive belts and their manufacture
    Patent number: 5341609
    Abstract: This invention provides a coated abrasive belt having a backing comprising a hot-melt adhesive, and a method of making the same. The splice of the endless coated abrasive belt according to the present invention has substantially the same thickness, density, and flexibility as the remainder of the belt.
    Type: Grant
    Filed: June 16, 1993
    Date of Patent: August 30, 1994
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Jan Gorsuch, Mark R. Ennis, Robert M. Burgess