Data exchange apparatus
CA 2015430 C · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Kitamura, Haruo; Yamanaka, Hideaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data exchange apparatus having common buffer memories for temporarily storing input data a vacant buffer, selector for selecting a vacant buffer to which the input data is stored and storage memories for storing buffer memory identification information on the bases of the destination of information of data in a predetermined order. The buffer memories are capable of reading and writing data in the order of arrival and are accessible independently of each other, i.e.. without affecting each other.
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 April 25, 1990 and granted March 31, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 25, 2012.
- 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.