Albumin preparation and process for producing same
CA 2033969 C · Owner: Matsuoka, Yasushi · Inventors: Yokoyama, Kazumasa; Tomioka, Shinzi; Takechi, Kazuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention has been achieved in order to solve a problem that aggregates, which are considered to be caused by the aggregation of albumin, and contaminating proteins such as transferrin remain in an albumin preparation. Thus the present invention provides an albumin preparation wherein the content of aggregates determined by gel filtration is lower than the detectable limit and the content of transferrin determined by Mancini's method is lower than the detectable limit as well as a process for producing same which comprises treating an aqueous solution containing serum albumin with an anion exchanger then with a, ration exchanger and finally subjecting the solution to heat …
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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
- Filed June 15, 1990 and granted October 29, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 15, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 15, 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.