Elasthane fibers stabilized against environmental influences
CA 1296445 C · Owner: Kausch, Michael · Inventors: Schroer, Hans; Suling, Carlhans; Kausch, Michael
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Elasthane fibers stabilized against environmental influences A B S T R A C T, The invention relates to elasthane fibers which are protected against harmful environmental influences particularly sunlight and combustion gases by a synergistic, stabilizer combination of a) highly alkylated, phenolic antioxidants corresponding to the following formula, I, in which, R1 R2 and R3 are C1-C3 alkyl radicals, in addition to which R3 may be C4-C6 alkyl radicals, and b) oligomeric, (cyclo)aliphatic phosphorous acid esters (oligomeric phosphites) obtained by reaction of pentaerythritol, perhydrobisphenol A and, optionally a mono-, alcohol with monomeric trialkyl or triaryl phosphites.
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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
- Granted February 25, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 2009.
- 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.