Patents by Inventor Gregory Francis Stifter

Gregory Francis Stifter 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).

  • Apparatus and method for applying coating materials to individual sheet members
    Patent number: 6074704
    Abstract: Sheets to be coated with water-based coating material, for example a primer and a low adhesion backsize, are supplied from a feeder (1), in end-to-end overlapping relationship, to a dual coater (3) in which the sheets are coated individually on both sides. A sheet inserter (2) is provided, upstream of the dual coater, to insert sheets from a second supply into the sheets from the feeder (1). The dual coated sheets are dried as individual sheets or as a pseudo-web of overlapped sheets, The sheets are then overlapped, unless previously overlapped, and the direction of overlap changed, if necessary, to provide the trailing edge of each sheet on top of the leading edge of each succeeding sheet. The overlapped sheets are conveyed through an adhesive transfer station (7) where stripes (236) of at least partially dried adhesive are coated onto the dual coated sheets from a transfer belt (71).
    Type: Grant
    Filed: June 4, 1998
    Date of Patent: June 13, 2000
    Assignee: 3M Innovative Properties Company
    Inventors: Frederic Pierre Alain Le Riche, Don Everett Branch, Gregory Francis Stifter, Kim Kiyoko Tsujimoto, Mark Steven Vogel
  • Apparatus and method for applying coating materials to individual sheet members
    Patent number: 5916630
    Abstract: Sheets to be coated with water-based coating material, for example a primer and a low adhesion backsize, are supplied from a feeder (1), in end-to-end overlapping relationship, to a dual coater (3) in which the sheets are coated individually on both sides. A sheet inserter (2) is provided, upstream of the dual coater, to insert sheets from a second supply into the sheets from the feeder (1). The dual coated sheets are dried as individual sheets or as a pseudo-web of overlapped sheets. The sheets are then overlapped, unless previously overlapped, and the direction of overlap changed, if necessary, to provide the trailing edge of each sheet on top of the leading edge of each succeeding sheet. The overlapped sheets are conveyed through an adhesive transfer station (7) where stripes (236) of at least partially dried adhesive are coated onto the dual coated sheets from a transfer belt (71).
    Type: Grant
    Filed: October 23, 1997
    Date of Patent: June 29, 1999
    Assignee: Minnesota Mining And Manufacturing Company
    Inventors: Frederic Pierre Alain Le Riche, Bernard Raymond Pierre, Gregory Francis Stifter, Mark Steven Vogel
  • Apparatus and method for applying coating materials to individual sheet meters
    Patent number: 5863330
    Abstract: Sheets to be coated with water-based coating material, for example a primer and a low adhesion backsize, are supplied from a feeder (1), in end-to-end overlapping relationship, to a dual coater (3) in which the sheets are coated individually on both sides. A sheet inserter (2) is provided, upstream of the dual coater, to insert sheets from a second supply into the sheets from the feeder (1). The dual coated sheets are dried as individual sheets or as a pseudo-web of overlapped sheets. The sheets are then overlapped, unless previously overlapped, and the direction of overlap changed, if necessary, to provide the trailing edge of each sheet on top of the leading edge of each succeeding sheet. The overlapped sheets are conveyed through an adhesive transfer station (7) where stripes (236) of at least partially dried adhesive are coated onto the dual coated sheets from a transfer belt (71).
    Type: Grant
    Filed: October 14, 1997
    Date of Patent: January 26, 1999
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Frederic Pierre Alain Le Riche, Bernard Raymond Pierre, Gregory Francis Stifter, Mark Steven Vogel