Communications network and method
CA 2108464 C · Owner: Wade, Christopher Anthony · Inventors: Wade, Christopher Anthony
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A TPON network in which the multiframe format comprises a control portion and a traffic portion. In the control portion the control word for each outstation is in the form of a respective group of contiguous bits. In the traffic portion which is, constituted by a series of traffic frames the traffic information in each traffic frame for each outstation is in the form of a respective group of contiguous bits. Such a multiframe format enables the use of single transducer transceiver in the outstations and, compared with known TPON multiframe formats increases the maximum operating range for the network beyond which transmit/receive conflict will occur.
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 June 8, 1992 and granted October 28, 1997. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 8, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 8, 2014.
- 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.