Magnetic disk cartridge
CA 2006961 A1 · Owner: Saito Tadashi · Inventors: Saito Tadashi; Yamashita Kazuhiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A magnetic disk cartridge has a case on which a transducer access rectangular opening is formed a, magnetic disk accommodated in the case and liners, partly welded to the inner surfaces of the case in order to clean the surfaces of the magnetic disk. The magnetic disk cartridge is characterized in that the liners are welded to the inner surfaces of the case through a welding pattern. The welding pattern comprises a discontinuous line extending along the edge of the liner and a straight line intersecting with the discontinuous line and unreaching an effective magnetic recording area.
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 29, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 29, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 29, 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.