Patents by Inventor Gerhard Usbeck

Gerhard Usbeck 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).

  • Process for treating aluminum oxide layers and use in the manufacture of offset-printing plates
    Patent number: 4492616
    Abstract: A process is disclosed for manufacturing sheets, foils, or strips which involves chemically, mechanically, and/or electrochemically roughening and anodically oxidizing aluminum or aluminum alloy surfaces, followed by two post-treatment steps. In the first step, the metal surface is treated with an aqueous alkali metal silicate solution; thereafter, the surface is treated with an aqueous solution comprising alkaline earth metal ions. The materials produced according to this process are particularly used as supports for offset-printing plates.
    Type: Grant
    Filed: August 19, 1983
    Date of Patent: January 8, 1985
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Engelbert Pliefke, Gerhard Usbeck
  • Polyvinylmethylphosphinic acid, process for its manufacture and use
    Patent number: 4458005
    Abstract: The invention relates to a new phosphorus-containing polymer, polyvinylmethylphosphinic acid. It is prepared by polymerization, preferably catalytic, of vinylmethylphosphinic acid or a salt thereof. The new polymer possesses valuable properties and is used, in particular, in the production of offset printing plates which have a light-sensitive layer.
    Type: Grant
    Filed: June 23, 1982
    Date of Patent: July 3, 1984
    Assignee: Hoechst Aktiengesellschaft
    Inventors: Dieter Mohr, Walter Herwig, Werner Frass, Gerhard Usbeck
  • Process for anodically oxidizing aluminum and use of the material so prepared as a printing plate support
    Patent number: 4229266
    Abstract: This invention relates to an improvement in the process for anodically oxidizing materials in the form of strips, foils, or sheets composed of aluminum or aluminum alloys in an aqueous electrolyte containing sulfuric acid and phosphoric acid, if appropriate, after a previous mechanical, chemical or electrochemical roughening, the improvement which comprises anodically oxidizing the material in an electrolyte having a concentration of sulfuric acid ranging from about 25 to 150 g per liter, of phosphoric acid ranging from about 10 to 50 g per liter, and of aluminum ions ranging from about 5 to 25 g per liter, at a current density ranging from about 4 to 25 A/dm.sup.2, and a temperature ranging from about 25.degree. to 65.degree. C.
    Type: Grant
    Filed: August 17, 1979
    Date of Patent: October 21, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Gerhard Usbeck
  • Process for anodically oxidizing aluminum and use of the material so prepared as a printing plate support
    Patent number: 4211619
    Abstract: This invention relates to an improvement in the process for anodically oxidizing materials in the form of strips, foils, or plates comprised of aluminum or aluminum alloys in an aqueous electrolyte containing sulfuric acid and aluminum ions, if appropriate, after a foregoing mechanical, chemical, or electrochemical roughening, the improvement comprising anodically oxidizing the material in an electrolyte having a concentration of sulfuric acid in the range of about 25 to 100 g per liter and of aluminum ions in the range of about 10 to 25 g per liter, at a current density in the range of about 4 to 25 A/dm.sup.2, and a temperature in the range of about 25.degree. to 65.degree. C.
    Type: Grant
    Filed: March 13, 1979
    Date of Patent: July 8, 1980
    Assignee: Hoechst Aktiengesellschaft
    Inventor: Gerhard Usbeck