Patents Represented by Attorney J. M. McCormack

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  • Constant temperature coefficient thick film thermistor
    Patent number: 3932312
    Abstract: A thermistor material which, when screened and fired upon ceramic substrates by thick film techniques, exhibits a substantially constant temperature coefficient of electrical resistance. The thermistor composition or ink, before screening, comprises from 30 to 80% by weight of an oxide of vanadium VO.sub.X, where X varies from 1.5 to 2.5, mixed with 70 to 20% by weight of a glass frit.
    Type: Grant
    Filed: April 1, 1974
    Date of Patent: January 13, 1976
    Assignee: Beckman Instruments, Inc.
    Inventor: Casimir W. Kazmierowicz