Patents by Inventor Ingo Wilmanns

Ingo Wilmanns 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).

  • Control of vapor deposition
    Patent number: 4024291
    Abstract: An arrangement for regulating the vapor deposited layer build-up in the production of deposited optically active thin layers on substrates in a vacuum. The optical characteristics of the deposited layer are measured continuously and the measurements are converted into proportional electrical signals. These signals are differentiated twice, with the second derivative serving to provide the zero-axis crossings of the signals. The vapor deposition process is interrupted dependent on the zero-axis crossings.
    Type: Grant
    Filed: September 21, 1976
    Date of Patent: May 17, 1977
    Assignee: Leybold-Heraeus GmbH & Co. KG
    Inventor: Ingo Wilmanns