Patents by Inventor Alfred Franz Wunder

Alfred Franz Wunder 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).

  • Electromagnetic valve for hydraulic media
    Patent number: 5937904
    Abstract: The electromagnetic valve comprises a valve housing, a valve slider and two electromagnets. The valve slider is displaceably arranged in a through-bore in the housing. The through-bore and the valve slider are provided with a hard coating in order to increase the number of switching movements.
    Type: Grant
    Filed: February 9, 1998
    Date of Patent: August 17, 1999
    Assignee: Waertsilae NSD Schweiz AG
    Inventor: Alfred Franz Wunder