Expired Canadian patentCanada
Stabilization of leukocytes
CA 1270446 C · Owner: Babior, Bernard M. · Inventors: Babior, Bernard M.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure Granulocytes are effectively preserved during storage for long periods of time without freezing by using as the storage medium a non-toxic buffer containing both gelatin and plasma.
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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 June 19, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 19, 2007.
- 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 28, 1986
GrantedJune 19, 1990
Term endedJune 19, 2007
Patent numberCA 1270446 C
Classification (IPC)C12N5/07 +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.