Wool protecting compositions and methods
CA 2126945 A1 · Owner: Rohm And Haas Company · Inventors: Carlson, Glenn Richard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a composition comprising an effective amount of an N'-alkyl-N'-(3,5-dimethylbenzoyl)-N-(substituted benzoyl)hydrazine to treat wool for protection from keratin digesting insects and an insect-proofing method using such compounds. The compositions and methods have particular application in treating wool.
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 June 28, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 28, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 28, 2016.
- 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.