Canadian application, no grantCanada
Use of cashew nut husk oil in rubber and duroplastics recycling
CA 2263990 A1 · Owner: Stielau, Martin Ernst · Inventors: Stielau, Martin Ernst
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns the use of cashew nut husk oil in rubber and duroplastics recycling. It describes how this natural substance can eat into or even dissolve the vulcanised rubber car tyres and be involved in their revulcanisation.
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 19, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 19, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 19, 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.
FiledAugust 19, 1997
GrantedNo grant recorded
Term endedAugust 19, 2017
Patent numberCA 2263990 A1
Classification (IPC)C08J11/04 +2 more
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.