Patents by Inventor Herman E. Wetterskog

Herman E. Wetterskog 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).

  • Bubble memory optimization by adjusting properties of quartz film
    Patent number: 4291091
    Abstract: A bubble memory device and method of fabrication are disclosed which establish that there is a correlation between bubble memory performance and the properties of a quartz film, which is interposed between the bubble film and metallic overlays, namely, the permalloy and/or conductor layers of the device. Specifically, it has been established that there is a correlation between improved device performance and a low p-etch rate which is a measurement that establishes certain elastic constants of the quartz (i.e., the response of the device to stress).
    Type: Grant
    Filed: June 11, 1980
    Date of Patent: September 22, 1981
    Assignee: Sperry Corporation
    Inventors: Martin J. Casey, Barry F. Stein, Herman E. Wetterskog
  • Bubble memory optimization by adjusting properties of quartz film
    Patent number: 4272347
    Abstract: A bubble memory device and method of fabrication are disclosed which establish that there is a correlation between bubble memory performance and the properties of a quartz film, which is interposed between the bubble film and metallic overlays, namely, the permalloy and/or conductor layers of the device. Specifically, it has been established that there is a correlation between improved device performance and a low p-etch rate which is a measurement that establishes certain elastic constants of the quartz (i.e., the response of the device to stress).
    Type: Grant
    Filed: October 5, 1977
    Date of Patent: June 9, 1981
    Assignee: Sperry Corporation
    Inventors: Martin J. Casey, Barry F. Stein, Herman E. Wetterskog