Structure and process for fabricating complementary vertical transistormemory cell
CA 1291577 C · Owner: International Business Machines Corporation · Inventors: Jambotkar, Chakrapani G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A compact complementary transistor switch (CTS) memory cell structure utilizing both vertical PNP and vertical NPN transistors in gallium arsenide technology is described. The base region of the vertical PNP transistor merges with the collector region of the vertical NPN transistor. The collector region of the vertical PNP transistor merges with the base region of the vertical NPN transistor. The emitter of the vertical PNP transistor is at the top, and the emitter of the vertical NPN transistor is at the bottom in relation to the emitter of the vertical PNP transistor. This structure leads to improvements in memory density performance and wireability of a memory array comprising many such …
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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 October 29, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 29, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.