Heparin derivatives and process for their preparation
CA 1309402 C · Owner: Tamagnone, Gianfranco · Inventors: Piani, Silvano; Fantuz, Marinella; Milani, Maria Rita
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New heparin derivative having antithrombotic activity, also endowed with reduced hemorrhagic and anticoagulant effects, obtained by treating in a basic medium heparins of various origin, optionally in the presence of alkali metal salts and of a reducing agent. The heparin derivatives obtained through this treatment show peculiar chemico-physical characteristics like, new signals at about 53 and 54 p.p.m. in the 13C-NMR spectrum and a raise of the specific rotatory power compared to that of the starting heparins to values, between +50° to +90°. Said structural modifications produce an improvement of the biological properties of the heparin substantially, keeping the antithrombotic activity …
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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 27, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 27, 2009.
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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.