Data processor for maintaining coherency of cache memory data
CA 2048473 C · Owner: Suzuki, Toshiaki · Inventors: Suzuki, Toshiaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data processor for maintaining coherency of data in a cache memory. The processor includes two memory-data-coherency maintaining devices and an operation mode changing device for changing a combination of operation modes of the maintaining devices, thereby enabling one kind of data processor to be adaptable to a plurality of different system structures and optimum memory-data-coherency to be maintained.
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 6, 1991 and granted May 5, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 6, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 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.