Improved treatment of hides
CA 2301715 A1 · Owner: Anderson, Colin Charles · Inventors: Anderson, Colin Charles
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process and apparatus for the treatment of hides and skins (3). The hide or skin is placed on a support (1,2) and sealed to the support around the edges of the skin or hide. A treatment liquor is then supplied under pressure betwen the skin or hide and the support to distend and stretch the skin or hide to permit the more rapid penetration of the treatment liquor into the skin or hide.
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 August 7, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 7, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 7, 2020.
- 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.