Patents by Inventor Helmut Franz

Helmut Franz 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).

  • Soluble polymer interleaving material
    Patent number: 5026597
    Abstract: A method is disclosed providing temporary protection of a glass surface from staining and scratches by coating the exposed surface with a soluble polymer film incorporating spacer particles of an inert material.
    Type: Grant
    Filed: July 24, 1987
    Date of Patent: June 25, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Helmut Franz, James H. Hanlon, Lloyd G. Shick
  • Method of using perfluoroalkylsilanes to lower the surface energy of glass
    Patent number: 4997684
    Abstract: A method is disclosed wherein a glass substrate is provided with a durable non-wetting surface by treatment with a perfluoroalkyl alkyl silane and a fluorinated olefin telomer.
    Type: Grant
    Filed: July 19, 1990
    Date of Patent: March 5, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Helmut Franz, George B. Goodwin
  • Chemically reacted glass surface
    Patent number: 4983459
    Abstract: A method and article are disclosed wherein a glass substrate is provided with a durable non-wetting surface by treatment with a perfluoroalkyl alkyl silane and a fluorinated olefin telomer.
    Type: Grant
    Filed: April 3, 1990
    Date of Patent: January 8, 1991
    Assignee: PPG Industries, Inc.
    Inventors: Helmut Franz, George B. Goodwin
  • Method of applying interleaving material to glass sheets
    Patent number: 4606946
    Abstract: A method is disclosed for applying a powdered interleaving material to a glass surface in the form of an aqueous composition comprising particulate interleaving material dispersed in atomized water.
    Type: Grant
    Filed: July 12, 1985
    Date of Patent: August 19, 1986
    Assignee: PPG Industries, Inc.
    Inventors: Paul F. Duffer, Joseph D. Kelly, Helmut Franz
  • Polymer solution working fluid for finishing processes
    Patent number: 4578203
    Abstract: A method is disclosed for protecting a substrate surface from particulate contaminants in a process using a working tool in conjunction with a working fluid, by employing as the working fluid a solution of a soluble polymer such as polyvinylpyrrolidone.
    Type: Grant
    Filed: April 1, 1983
    Date of Patent: March 25, 1986
    Assignee: PPG Industries, Inc.
    Inventors: Helmut Franz, James H. Hanlon, Lloyd G. Shick
  • Acidified powdered interleaving
    Patent number: 4568605
    Abstract: A method and composition utilizing porous particulate interleaving material treated with a strong organic acid are disclosed to reduce staining of stacked glass sheets.
    Type: Grant
    Filed: January 30, 1985
    Date of Patent: February 4, 1986
    Assignee: PPG Industries, Inc.
    Inventors: Paul F. Duffer, Helmut Franz, Joseph D. Kelly
  • Acidified powdered interleaving
    Patent number: 4530889
    Abstract: A method and composition utilizing porous particulate interleaving material treated with a strong organic acid are disclosed to reduce staining of stacked glass sheets.
    Type: Grant
    Filed: January 28, 1981
    Date of Patent: July 23, 1985
    Assignee: PPG Industries, Inc.
    Inventors: Paul F. Duffer, Helmut Franz, Joseph D. Kelly
  • Method of applying interleaving material to glass sheets
    Patent number: 4529648
    Abstract: A method is disclosed for applying a powdered interleaving material to a glass surface in the form of an aqueous slurry.
    Type: Grant
    Filed: January 28, 1981
    Date of Patent: July 16, 1985
    Assignee: PPG Industries, Inc.
    Inventors: Paul F. Duffer, Joseph D. Kelly, Helmut Franz
  • Method for lowering the surface energy of glass
    Patent number: 4529657
    Abstract: The surface energy of a glass article is reduced by adsorbing multivalent cations such as chromium onto a glass surface, then treating the surface with an aqueous solution of an alkali metal alkylate such as sodium stearate or oleate to strongly bond the long chain paraffinic or olefinic acid anion to the glass surface by ionic bonding of the alkylate anion to the adsorbed multivalent cation thereby rendering the glass surface non-wettable and lubricated.
    Type: Grant
    Filed: March 5, 1982
    Date of Patent: July 16, 1985
    Assignee: PPG Industries, Inc.
    Inventor: Helmut Franz
  • Two step interleaving method
    Patent number: 4489106
    Abstract: A method is disclosed for protecting glass surfaces in a stack of glass sheets by treating the surfaces with a stain-inhibiting organic hydroxy acid and separating adjacent surfaces with an interleaving material.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: December 18, 1984
    Assignee: PPG Industries, Inc.
    Inventors: Paul F. Duffer, Helmut Franz, Joseph D. Kelly
  • Mixed acid stain inhibitor
    Patent number: 4487807
    Abstract: A method is disclosed for protecting glass surfaces in a stack of glass sheets by treating the surfaces with a mixture of stain-inhibiting organic acids which crystallize on the glass, and separating adjacent surfaces with an interleaving material.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: December 11, 1984
    Assignee: PPG Industries, Inc.
    Inventors: Paul F. Duffer, Joseph D. Kelly, Helmut Franz
  • Pressing plastic with extensible coating
    Patent number: 4454203
    Abstract: A method for making a plastic billet particularly suitable for compression stretching by coating the plastic surface with a more extensible polymer film is disclosed.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: June 12, 1984
    Assignee: PPG Industries, Inc.
    Inventors: Helmut Franz, James H. Hanlon, Lloyd G. Shick
  • Organotin surface treatment and interleaving material for glass sheets
    Patent number: 4447496
    Abstract: A method is disclosed for protecting glass surfaces in a stack of glass sheets by treating the surfaces with an organotin compound and separating adjacent surfaces with an interleaving material.
    Type: Grant
    Filed: July 23, 1982
    Date of Patent: May 8, 1984
    Assignee: PPG Industries, Inc.
    Inventors: Helmut Franz, Paul F. Duffer, Joseph D. Kelly
  • Organotin surface treatment and interleaving material for glass sheets
    Patent number: 4360544
    Abstract: A method is disclosed for protecting glass surfaces in a stack of glass sheets by treating the surfaces with an organotin compound and separating adjacent surfaces with an interleaving material.
    Type: Grant
    Filed: January 28, 1981
    Date of Patent: November 23, 1982
    Assignee: PPG Industries, Inc.
    Inventors: Helmut Franz, Paul F. Duffer, Joseph D. Kelly
  • Plastic surface treatment
    Patent number: 4332861
    Abstract: A method is disclosed for improving a roughened surface of a plastic article by applying a smooth, durable polymer coating.
    Type: Grant
    Filed: November 24, 1980
    Date of Patent: June 1, 1982
    Assignee: PPG Industries, Inc.
    Inventors: Helmut Franz, James H. Hanlon, Lloyd G. Shick
  • Polyurethane surface treatment and resulting monomolecular layered article
    Patent number: 4311764
    Abstract: A method for producing a lubricating, nonreactive surface layer on polyurethane by adsorption of a nonreactive species is disclosed.
    Type: Grant
    Filed: October 1, 1980
    Date of Patent: January 19, 1982
    Assignee: PPG Industries, Inc.
    Inventor: Helmut Franz
  • Siloxane release surfaces on glass
    Patent number: 4301197
    Abstract: Highly efficient release surfaces on glass substrates prepared by treatment of the glass with poly alkyl hydrogen siloxane are disclosed.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: November 17, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Helmut Franz, James H. Hanlon, Lloyd G. Shick
  • Fluorocarbon treatment for reducing the reactivity of a glass surface and product
    Patent number: 4276350
    Abstract: A method is disclosed for reducing the reactivity of a glass surface by blocking reactive sites such as silanol groups at the glass surface with a molecular layer of fluorocarbon. The method involves adsorbing multivalent metal cations at the glass surface to provide anchoring sites for the chemisorption of otherwise nonreactive fluorocarbons.
    Type: Grant
    Filed: August 13, 1979
    Date of Patent: June 30, 1981
    Assignee: PPG Industries, Inc.
    Inventor: Helmut Franz
  • Organotin treatment for reducing the reactivity of a glass surface
    Patent number: 4263371
    Abstract: A method for reducing the surface energy of a glass article by chemisorption of an alkyltin compound at a temperature insufficient to thermally decompose the compound is disclosed.
    Type: Grant
    Filed: October 9, 1979
    Date of Patent: April 21, 1981
    Assignee: PPG Industries, Inc.
    Inventor: Helmut Franz
  • Method for making dimethyltin difluoride
    Patent number: 4254046
    Abstract: A method is disclosed for making dimethyltin difluoride by reacting dimethyltin dichloride with an alkali metal or ammonium fluoride salt.
    Type: Grant
    Filed: February 5, 1979
    Date of Patent: March 3, 1981
    Assignee: PPG Industries, Inc.
    Inventors: Helmut Franz, Paul F. Duffer, James H. Hanlon