Patents by Inventor Mark R. Garrison

Mark R. Garrison 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).

  • Forming process for light gauge polymer sheet material
    Patent number: 4443398
    Abstract: A method for cold-forming light gauge polymer sheet material by application of localized heat to the area of the fold. In the manufacture of Lexan polycarbonate flexible magnetic disk jackets, heat is applied to the folded edge by a heating element generally maintained uniformly at 375.degree. F. The heating element contacts the folded Lexan polycarbonate edge in a U-shaped trough having planar sidewalls generally perpendicular to a planar bottom wall.
    Type: Grant
    Filed: July 27, 1981
    Date of Patent: April 17, 1984
    Assignee: Verbatim Corporation
    Inventors: Lawrence G. Martinelli, Mark R. Garrison
  • Forming process for light gauge polymer sheet material
    Patent number: 4294640
    Abstract: A method for cold-forming light gauge polymer sheet material by application of localized heat to the area of the fold. In the manufacture of Lexan polycarbonate flexible magnetic disk jackets, heat is applied to the folded corner by a heater bar generally maintained uniformly at 375.degree. F. The heater bar contacts the folded Lexan polycarbonate edge in a U-shaped trough having planar side walls generally perpendicular to a planar bottom wall.
    Type: Grant
    Filed: December 12, 1979
    Date of Patent: October 13, 1981
    Assignee: Verbatim Corporation
    Inventors: Lawrence G. Martinelli, Mark R. Garrison