Method for producing a seamless metallic belt
CA 2201190 A1 · Owner: Matsuzawa, Kouzaburo · Inventors: Fujii, Atsushi; Matsuzawa, Kouzaburo; Funaki, Akira
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for producing a seamless metallic belt without a welded line and capable of being easily produced in high accuracy. A seamless belt material 21 having a defined length as a whole is placed on a core 11 and is held in a stretching state on the core 11 thermally expanded by heating and, further, in the above state, an outer circumference of the belt material 21 is cut to a predetermined thickness. The seamless metallic belt 20 is obtained by removing after the core 11 is cooled.
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 March 27, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 27, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 27, 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.