Process for the photochemical and thermal stabilisation of polyamide fibre material with a copper complex having fibre-affinity and an oxalic acid diarylamide
CA 2067059 A1 · Owner: Reinert, Gerhard · Inventors: Reinert, Gerhard; Kaschig, Juergen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1-18627/A, Process for the photochemical and themal stabilisation of polyamide fibre material with a copper complex having fibre-affinity and an oxalic acid diarylamide Abstract of the Disclosure, There is disclosed a process for the photochemical and thermal stabilisation of polyamide fibre material as claimed in claim 1. The fibre materials treated by the inventive process are distinguished by good fibre affinity and enhanced photochemical and thermal stability.
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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 April 24, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 24, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 24, 2014.
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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.