Polysaccharides containing aromatic aldehydes and their derivatization via amine-aldehyde interactions
CA 1338654 C · Owner: National Starch And Chemical Company · Inventors: Del Giudice, David M.; Billmers, Robert L.; Hasuly, Michael J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polysaccharide derivative having the structure Sacch- O-Z-Ar-CH=N-Y or , where Sacch-O-, represents a polysaccharide molecule; where Z is (CH2)m-O- when Ar is a divalent aromatic group or -(CH2)n- when Ar is a divalent aromatic group other than a phenolic aromatic group and Y is a monovalent group derived from a water-soluble substituted or unsubstituted aromatic compound containing only one free primary amine group; where Z is , or -(CH2)n- when Ar is a, divalent aromatic group and Y is a monovalent group derived from a water-soluble substituted or unsubstituted aliphatic or cycloaliphatic compound containing only one primary amine group; where Z is , or -(CH2)n- when, Ar is a divalent …
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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 October 15, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 15, 2013.
- 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
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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.