System for supplying information to terminal device
CA 2269847 C · Owner: Watanabe, Osamu · Inventors: Yamamoto, Masatsugu; Watanabe, Osamu; Maeno, Mitsuaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The system for supplying information to a terminal device or devices has one or more optical disk drives a, magnetic disk storage for storing information regarding a beginning portion of the information recorded on the optical disk or disks, one or more optical disk monitoring circuits an electronic switch assembly for selectively outputting one of the stored information from the magnetic disk storage and the readout information from the optical disk drive one or, more FIFO memories for temporarily holding and outputting information from the electronic switch assembly and a, controller which causes the electronic switch assembly to output the stored information from the magnetic disk …
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 22, 1999 and granted September 25, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 22, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 22, 2021.
- 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.