Patents by Inventor Robert C. Fitzer

Robert C. Fitzer 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).

  • Patent number: 5422189
    Abstract: Flexible optically uniform sign face substrate comprising at least one layer of durable thermoplastic sheeting and an optically uniform dimensionally stable scrim film, and more particularly a sign face substrate comprising at least one layer of optically uniform dimensionally stable multilayer scrim film laminated between at least two layers of durable thermoplastic sheeting for use in areas such as awning, canopy, fascia or sign material construction.
    Type: Grant
    Filed: October 1, 1992
    Date of Patent: June 6, 1995
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert W. Warner, Robert C. Fitzer, Ronald J. Tabar
  • Patent number: 4737224
    Abstract: A process and composition are provided that provide for thermal transfer of ink compositions and eliminate the need to prepare articles such as sign faces, particularly flexible sign faces, by painting with ink compositions that contain solvents. The present process and composition permit thermal transfer from a carrier to a receptor at low temperatures with the use of vacuum pressure. The transferred ink adheres tenaciously to the receptor and is flexible.
    Type: Grant
    Filed: January 7, 1986
    Date of Patent: April 12, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert C. Fitzer, Frank L. Deyak, Charles J. Fabbrini
  • Patent number: 4565842
    Abstract: A process and composition are provided that provide for thermal transfer of ink compositions and eliminate the need to prepare articles such as sign faces, particularly flexible sign faces, by painting with ink compositions that contain solvents. The present process and composition permit thermal transfer from a carrier to a receptor at low temperatures with the use of vacuum pressure. The transferred ink adheres tenaciously to the receptor and is flexible.
    Type: Grant
    Filed: April 18, 1985
    Date of Patent: January 21, 1986
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert C. Fitzer, Charles J. Fabbrini, Frank L. Deyak
  • Patent number: 4542078
    Abstract: A process and composition are provided that provide for thermal transfer of ink compositions and eliminate the need to prepare articles such as sign faces, particularly flexible sign faces, by painting with ink compositions that contain solvents. The present process and composition permit thermal transfer from a carrier to a receptor at low temperatures with the use of vacuum pressure. The transferred ink adheres tenaciously to the receptor and is flexible.
    Type: Grant
    Filed: January 14, 1985
    Date of Patent: September 17, 1985
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Robert C. Fitzer, Frank L. Deyak, Charles J. Fabbrini
  • Patent number: 4227350
    Abstract: A low-density abrasive product formed of a uniform cross-section lofty web comprised of continuous three-dimensionally undulated inter-engaged autogenously bonded filaments of high yield strength filament-forming material impregnated with a tough adherent binder which adherently bonds the filaments together and also bonds a multitude of abrasive granules uniformly dispersed throughout the web. The abrasive article is made by forming the web by an extrusion process, uniformly coating the filaments of the web with a liquid curable binder resin, depositing the abrasive granules onto the web coating, curing the first binder coating, applying a second coating of liquid curable binder and then curing the binder.
    Type: Grant
    Filed: November 2, 1977
    Date of Patent: October 14, 1980
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: Robert C. Fitzer