Data storage case having a write/protect assembly
CA 2005944 C · Owner: Iwata, Hirokimi · Inventors: Haruna, Shuji; Iwata, Hirokimi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A data strage case having a write/protect assembly includes a main body of the cartridge, a plurality of detection holes formed in the lateral sides and a pair of flat sides of the main body of the cartridge at a corner of the front side of the main body of the cartridge looking in the direction of insertion of the main body of the cartridge into the interior of the recording/reproducing apparatus and, mating detection elements intruded into these detection holes. The main body of the cartridge accommodates a disk-shaped recording medium, on which information signals can be recorded, and has apertures by which the signal recording section of the disk-shaped recording medium is exposed to …
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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 December 19, 1989 and granted September 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 19, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 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.