Water-insoluble preparations of peptide material their production and their use
CA 1063296 A · Owner: Bayer Aktiengesellschaft · Inventors: Bartl, Herbert; Bomer, Bruno; Huper, Fritz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a crosslinked copolymer comprising the following copolymerized units:, (A) about 0.1 to 30 wt. % of at least one .alpha..beta.-monoolefinically unsaturated dicarboxylic acid anhydride having about 4 to 9 carbon atoms; (B) about 35 to 90 wt. % of at least one di- and/or poly(meth)acrylate of a diol and/or polyol as hereinafter defined; and (C) about 5 to 60 wt. % of at least one hydrophilic monomer the copolymer having a bulk volume of 1.4 to 30 ml/g and a specific surface area of about 1 to 500 m2/g, and containing after saponification of the, anhydride groups about 0.01 to 14 milliequivalents of acid per gram. The copolymer is useful as a component of proteinic …
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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 September 25, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 25, 1996.
- 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.