Computer security device
CA 2276493 C · Owner: Jeon, Chang-Yong · Inventors: Jeon, Chang-Yong
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A computer security device for use with a computer having a main unit and a cover for the main unit. The security device includes a relay connected to a main power of the computer for switching on and off power to the main power of said computer. An input/output interface is disposed in the main unit for controlling two-way communication of computer inner storage medium outer storage medium and communication medium. A locking device on the main unit includes a plurality of selectable settings corresponding to computer, control modes. The settings are selectable using a key. A signal detector detects the control mode and transmits signals corresponding to each of the control modes. A …
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 October 30, 1997 and granted January 21, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 30, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 30, 2019.
- 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.