Multimedia information exchanging system
CA 1292052 C · Owner: Hoshi, Tohru · Inventors: Morita, Takashi; Mizuhara, Noboru; Hoshi, Tohru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A multimedia information exchanging system in a digital exchange network has an exchange system in which channels are selectively assigned for communication among a plurality of subscribers. This system has many pieces of subscriber line terminating equipment each of which is, provided on the subscriber side of each subscriber line and which connects at least one terminal device to the subscriber line through subchannels. The system permits simultaneous multiple communications between multiple pairs of terminal devices by sending request information from a first piece of subscriber line terminating equipment to a second piece of subscriber line terminating equipment. The request information …
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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
- Granted November 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 12, 2008.
- 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.