Patents by Inventor David W. Erismann

David W. Erismann 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: 5518661
    Abstract: A paint stripper composition comprising benzyl alcohol or a derivative thereof and a chlorinated alkane.
    Type: Grant
    Filed: May 18, 1995
    Date of Patent: May 21, 1996
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Nathaniel P. Langford, David W. Erismann
  • Patent number: 4929029
    Abstract: A brush including a laminate having a handle end portion adapted for manual engagement, and an opposite head end portion; and a plurality of rows of bristles having end portions adhered between adjacent plies in the head end portion of the laminate and projecting outwardly. The brush is formed from pieces of oriented polymeric film, portions of which are adhered to individual plies to be incorporated in the laminate and have portions projecting from the plies separated into bristles before the plies are laminated to form the brush. Lamination is done by driving moisture out of pasteboard layers coated with dried water activatable adhesive by exposure to radio frequency energy which activates the adhesive to form the laminate.
    Type: Grant
    Filed: February 21, 1989
    Date of Patent: May 29, 1990
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Edward W. Deziel, John T. Rueb, Mark D. Sorlien, Jack A. Dahlstrom, David W. Erismann
  • Patent number: 4821359
    Abstract: A brush including a laminate having a handle end portion adapted for manual engagement, and an opposite head end portion; and a plurality of rows of bristles having end portions adhered between adjacent plies in the head end portion of the laminate and projecting outwardly. The brush is formed from pieces of oriented polymeric film, portions of which are adhered to individual plies to be incorporated in the laminate and have portions projecting from the plies separated into bristles before the plies are laminated to form the brush. Lamination is done by driving moisture out of pasteboard layers coated with dried water activatable adhesive by exposure to radio frequency energy which activates the adhesive to form the laminate.
    Type: Grant
    Filed: May 8, 1987
    Date of Patent: April 18, 1989
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: Edward W. Deziel, John T. Rueb, Mark D. Sorlien, Jack A. Dahlstrom, David W. Erismann
  • Patent number: 4783185
    Abstract: A pen-like dispenser for applying rust converting liquid including a cap having an outer abrading surface adapted to scrape loose paint and rust from a surface to which the liquid is to be applied; and a liquid dispensing part including an elongate fluid reservoir having resiliently flexible walls, and a dispensing tip assembly. The tip assembly includes a valve member normally closing the tip assembly and having a tip projecting through an outlet passageway through the housing under the influence of a spring. The valve member may be moved to an open position by pressing its tip against a rusted substrate to afford outflow of the liquid, which flow can be controlled and aided by pressing inwardly on the flexible walls of the reservoir.
    Type: Grant
    Filed: July 7, 1986
    Date of Patent: November 8, 1988
    Assignee: Minnesota Mining and Manufacturing Company
    Inventors: David W. Erismann, David F. Serino, Mark D. Sorlien
  • Patent number: 4389431
    Abstract: A mechanical plating process utilizes a chemical promotor system for providing heavy, thick metallic coatings on articles, the system comprising a flash promotor for providing a thin, adherent flash coating on the articles and a continuing promotor for incremental addition together with the finely divided mechanical plating metal to form the heavy, thick coatings.
    Type: Grant
    Filed: June 30, 1982
    Date of Patent: June 21, 1983
    Assignee: Minnesota Mining and Manufacturing Company
    Inventor: David W. Erismann