Heteropolysaccharide 105-4
CA 2021799 C · Owner: Dasinger, Bruce L. · Inventors: Dasinger, Bruce L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
64680-555, P.C. 7589, HETEROPOLYSACCHARIDE 105-4 Heteropolysaccharide 105-4, prepared by fermentation of a new, unnamed Pseudomonas species ATCC 53923 is useful as an industrial thickening suspending, or stabilizing agent. The heteropolysaccharide contains mannose, galactose and glucose in the approximate ratio of 1.3:1:3.6 and also contains, based on the weight of the polysaccharide, 10 to 25% of uronic acid and 10 to 15% of acetate groups.
Read the whole patent
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 July 23, 1990 and granted December 13, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 23, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 23, 2012.
- 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.