Cmos master slice
CA 2048963 A1 · Owner: Ohba, Osamu · Inventors: Nariishi, Masaaki; Ohba, Osamu; Seki, Naoyasu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A CMOS master slice having a plurality of reguraly arranged basic cells improves an integration efficiency by optimizing size and arrangement of MOS transistors in the basic cells. Each of the basic cells comprises a first pair of transistors having gates thereof arranged to parallelly face each other and a second, pair of transistors having gate electrodes shorter in gate width than that of the first pair of transistors and parallel to the gate electrodes of the first pair of transistors. In adjacent basic cells the gate, electrodes of adjacent second transistors are substantially on a line so that a wasteful space is eliminated.
Read the whole patent
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
- Filed August 12, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 12, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 12, 2013.
- 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
Timeline From CIPO dates
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.