Patents by Inventor Michael W. Collver

Michael W. Collver 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).

  • Temperature independent semiconductor resistor and method of making same
    Patent number: 4063210
    Abstract: A polycrystalline film having an electrical resistivity independent of temperature is disclosed. The film has substantially only one crystalline phase. The crystals forming that phase are of a semiconductive material supersaturated with a deep level dopant and have average dimensions from about 200 to 10,000 angstroms. At least about 10 atomic percent of the deep level dopant is dispersed within the semiconductive material crystals forming the one crystalline phase. The film is useful in making an electrical resistor whose resistance value is independent of temperature from about 4.degree. Kelvin to approximately 373.degree. Kelvin. Aging effects limit utility at significantly higher temperatures.
    Type: Grant
    Filed: February 17, 1976
    Date of Patent: December 13, 1977
    Assignee: General Motors Corporation
    Inventor: Michael W. Collver