Recombinant human serum albumin, process for producing the same and pharmaceutical preparation containing the same
CA 2096572 A1 · Owner: Ohtani, Wataru · Inventors: Noda, Munehiro; Kondo, Masahide; Yokoyama, Kazumasa
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Human serum albumin obtained by gene manipulation techniques can be purified by a combination of specified steps in which a culture supernatant obtained from a human serum albumin-producing host is subjected to ultrafiltration heat, treatment, acid treatment and another ultrafiltration followed, by subsequent treatments with a cation exchanger a hydrophobic, chromatography carrier and an anion exchanger and by salting-, out to thereby obtain a pure form of human serum albumin which contains substantially no proteinous and polysaccharide contaminants, which is formulated into a pharmaceutical preparation. This process makes it possible to effeciently purify recombinant human serum albumin …
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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 May 19, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 19, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 19, 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.