Method and device for protecting information against unauthorised use
CA 2473122 A1 · Owner: Fadyushin, Alexey Borisovich · Inventors: Fadyushin, Alexey Borisovich
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The inventive method and device for protecting information against unauthorised use makes it possible to detect a user who submits a copy for unauthorised copying. Information obtained by the user is coded by means of an asymmetrical cryptography method using said user's key which is received by a distributor of information. The information is decoded before the use thereof with the aid of a privet key of the user. In order to improve the protection the decoding can be carried out directly in the processor of the computer of the user in such a way that the decoded information does not exist outside said processor.
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 November 12, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 12, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 12, 2023.
- 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.