Recording/reproducing device
CA 2006142 C · Owner: Sharp Kabushiki Kaisha · Inventors: Maeda, Shigemi; Terashima, Shigeo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In a recording/reproducing device in accordance with the present invention, recording or reproducing positions are recognized by using absolute address parts which are predeterminately formed in a rewritable recording medium. Moreover the device is composed so that the user can easily edit reproducing procedures stored in memory means with respect to each information in the recording medium by using the recording or reproducing positions read from above-mentioned absolute address parts and he/she can also rewrite above-mentioned reproducing procedures edited by him/her in the lead-in region of the above-mentioned recording medium. Accordingly, the user can save trouble to re-enter those …
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 December 20, 1989 and granted August 13, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 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.