Expired Canadian patentCanada
Purified hemoglobin solutions and method for making same
CA 1298552 C · Owner: Baxter Travenol Laboratories, Inc. · Inventors: Estep, Timothy N.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Hemoglobin solutions are purified by heating in the presence of a reducing agent or other deoxygenating conditions such that nonhemoglobin proteins are selectively precipitated and/or virus is inactivated while minimizing hemoglobin loss.
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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
- Granted April 7, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 7, 2009.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledFebruary 4, 1988
GrantedApril 7, 1992
Term endedApril 7, 2009
Patent numberCA 1298552 C
Classification (IPC)A61L2/04 +1 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.