Electrical transducer and method of making
Patent 4100524 Issued on July 11, 1978. Estimated Expiration Date: 
May 6, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
May 6, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3202951 3498832 3533760 3922705 Metalloceramic current-conducting material and a method for preparing same Methods of fabricating low pressure silicon transducers Patent #: 4016644 InventorAssigneeApplicationNo. 05/683714 filed on 05/06/1976US Classes:338/2, STRAIN GAUGE TYPE252/513, Iron group metal (iron, cobalt, nickel)252/521.2, Iron, cobalt, or nickel compound252/521.3, Silicon containing or with silicon compound338/308, Resistance element coated on base338/5Dynamometer typeExaminersPrimary: Padgett, Benjamin R.Assistant: Barr, Josephine Attorney, Agent or FirmInternational ClassesC22C 32/00 (20060101)G01L 1/20 (20060101) G01L 1/22 (20060101) G01B 7/16 (20060101) AbstractA cermet composition useful in the form of a thin-film as a strain gage consists of 65%-70% by weight chromium, 18%-32% by weight silicon monoxide, and 3%-12% by weight nickel, deposited by vacuum evaporation. After initial deposition, vacuum annealing is accomplished, or, if a more positive TCR and TSS is required, the annealing can be repeated at a higher temperature. | |
