Expired Canadian patentCanada
Polyethyleneimine matrixes for affinity chromatography
CA 1332598 C · Owner: Kakodkar, Sunil V. · Inventors: Crane, Laura J.; Kakodkar, Sunil V.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Affinity chromatography matrixes and immobilized enzymes are provided in which the solid support is a covalently bound, non-crosslinked polyethyleneimine bonded phase.
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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 October 18, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 18, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 20, 1989
GrantedOctober 18, 1994
Term endedOctober 18, 2011
Patent numberCA 1332598 C
Classification (IPC)B01J20/28 +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.