Irreversible semiconductor switching element and semiconductor memory device utilizing the same
CA 1082809 A · Owner: Nippon Telegraph And Telephone Public Corporation · Inventors: Watanabe, Takashi; Tanimoto, Masafumi; Murota, Junichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Specification, Title of the Invention, Irreversible Semiconductor Switching Element and Semiconductor, Memory Device Utilizing the Same Abstract of the Disclosure, The switching element comprised a high resistivity polycrystalline silicon resistor whose resistance irreversibly decreases to a small value at a threshold voltage when the voltage across the resistor reaches the threshold voltage. A semiconductor memory devise is constituted by using the switching element as a memory cell and, a semiconductor gate element for controlling the current flowing through the semiconductor switching element. The switching element has simple construction and can operate with low voltage and low current. …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted July 29, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 29, 1997.
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Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.