Expired Canadian patentCanada
Method of producing human serum albumin involving heating step
CA 2395590 C · Owner: Sakaguchi, Masahiro · Inventors: Yagi, Kazunari; Mizokami, Hiroshi; Tajima, Yoshitaka
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for preparing human serum albumin comprises the step of heat-treating a human serum albumin solution containing contaminants at a pH value in the proximity to the isoelectric point of the contaminants.
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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 October 24, 2001 and granted December 11, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 24, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 24, 2023.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 24, 2001
GrantedDecember 11, 2012
Term endedOctober 24, 2021
Patent numberCA 2395590 C
Classification (IPC)C07K14/76 +2 more
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.