Optical memory
CA 1290848 C · Owner: Gapchenko, Leonid M. · Inventors: Skuridin, Vladimir P.; Antonov, Alexandr A.; Tokar, Alexandr P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosure is made of an optical memory wherein a cylindrical information carrier having a recording coating applied on a tubular base and disposed in a stationary cylindrical container provided with a window in the lateral surface thereof. A lens is secured in said window of said cylindrical container to let through a radiation flux from a source of modulated coherent radiation. The cylindrical container is filled with a liquid or gaseous medium transparent for the radiation flux and is twice as long as the recording coating applied on the tubular base of the cylindrical information carrier equipped with drives for rotation and axial movement.
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
- Granted October 15, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2008.
- 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.