Buffer memory device for packet data and method of controlling the device
CA 2001616 C · Owner: Kudoh, Norimasa · Inventors: Kudoh, Norimasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A buffer memory device and method for fixed-length packet data. The write and read addresses of a memory are controlled by respectively independent pointer queues and these pointer queues are arranged to be distributed to the address data queue of any of the Packet queues. When data are concentrated on a specific packet queue, the address data of packet queues low in use frequently are distributed so that the writable area of the specific packet queue can be expanded.
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 October 26, 1989 and granted May 18, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 26, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2011.
- 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.