Color facsimile and color facsimile transmission method
CA 2273973 C · Owner: Panasonic Communications Co. Ltd. · Inventors: Kizawa, Makoto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A color facsimile comprises a multilevel JPEG coding/decoding means (106) for coding color data, and a binary JBIG coding/decoding means (108). When the receiving side facsimile employs the same recording system as that of the transmitting side facsimile, color data read out by a color correcting section (119) are corrected with a correction value corresponding to the characteristics of a recording means of the transmitter binarized and coded , by the JBIG coding/decoding means (108) and transmitted. When the receiving side facsimile does not employ the same recording system as that of the transmitting side facsimile, the read out color data are coded by the JPEG coding/decoding …
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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
- Filed October 7, 1998 and granted May 6, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 7, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 7, 2020.
- 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
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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.