Enzymatic clarification of polysaccharides
CA 2099239 C · Owner: Shin-Etsu Chemical Co. Ltd. · Inventors: Pollock, Thomas J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel enzyme composition capable of lysing or digesting cells or cellular debris of polysaccharideproducing bacteria in the presence of the exopolysaccharides without any significant degradation of the exopoly-saccharides. Methods for preparing the enzyme composition using the composition to clarify mixtures of poly-saccharides and cellular debris, and pure cultures for making the enzyme are disclosed.
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 June 25, 1993 and granted September 22, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 25, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2015.
- 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.