Patents by Inventor Ingo G. Wilmanns

Ingo G. 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).

  • Method and apparatus for regulating evaporating rate and layer build up in the production of thin layers
    Patent number: 4140078
    Abstract: An arrangement for regulating the evaporation rate and the layer buildup in the production of optically effective thin layers in a vacuum on substrates with controlled evaporator power and with continuous measuring of the optical characteristics of the deposited layer. The evaporation is started with a given evaporator power and with the start of change of the optical characteristics of the layer, the measured result after forming the time derivative is continuously compared with the output signal of a signal generator. This output signal reproduces the time rate of change of the optical properties during the layer buildup. The difference signal of the comparison signal is used to increase the evaporator power if the layer buildup lags, and to reduce this power if the layer buildup is too fast.
    Type: Grant
    Filed: November 10, 1976
    Date of Patent: February 20, 1979
    Assignee: Leybold Heraeus GmbH & Co. KG
    Inventor: Ingo G. Wilmanns
  • Method for regulating evaporating rate and layer build up in the production of thin layers
    Patent number: 4068016
    Abstract: An arrangement for regulating the evaporation rate and the layer buildup in the production of optically effective thin layers in a vacuum on substrates with controlled evaporator power and with continuous measuring of the optical characteristics of the deposited layer. The evaporation is started with a given evaporator power and with the start of change of the optical characteristics of the layer, the measured result after forming the time derivative is continuously compared with the output signal of a signal generator. This output signal reproduces the time rate of change of the optical properties during the layer buildup. The difference signal of the comparison signal is used to increase the evaporator power if the layer buildup lags, and to reduce this power if the layer buildup is too fast.
    Type: Grant
    Filed: March 11, 1975
    Date of Patent: January 10, 1978
    Inventor: Ingo G. Wilmanns