Patents by Inventor Martin Pollmann

Martin Pollmann 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).

  • Method for coating polymethylmethacrylate substrate with aluminum
    Patent number: 5074984
    Abstract: In a device for coating a substrate 1 made of polymethylmethacrylate with aluminum by means of a direct current source 10 which is connected to an electrode 5 disposed in an evacuable coating chamber 15a and electrically connected to a target 3 to be sputtered and the sputtered particles are deposited on a substrate 1 and wherein a process gas is introduced into the coating chamber (15, 15a), helium has is introduced as a process gas in order to improve adhesiveness and service life 2.
    Type: Grant
    Filed: December 13, 1989
    Date of Patent: December 24, 1991
    Assignee: Leybold Aktiengesellschaft
    Inventors: Eggo Sichmann, Thomas Krug, Wolf-Eckart Fritsche, Martin Pollmann