Process for the photochemical and thermal stabilization of polyamide fibres having an affinity for acid and basic dyes, and of blends of said fibres with one another and with other fibres
CA 2019751 A1 · Owner: Reinert, Gerhard · Inventors: Reinert, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1-17637/=, Process for the photochemical and thermal stabilization of polyamide fibres having an affinity for acid and basic dyes and of blends of said, fibres with one another and with other fibres Abstract of the Disclosure, The invention describes a process for the photochemical and thermal stabilization of polyamide fibres having an affinity for acid and basic dyes, and of blends of said fibres with one another and with other fibres, a composition for carrying out the process and the fibre materials treated therewith.
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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 25, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 25, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2012.
- 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.