Method of preparing highly purified alpha-1-proteinage inhibitor
CA 1340236 C · Owner: Bayer Corporation · Inventors: Shearer, Michael A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a highly purified concentrate of alpha-1-proteinase inhibitor. A method of removing proteins having disulfide bonds, with mild reducing agents and a temperature sufficient to prohibit regrouping of the reduced proteins, results in essentially pure alpha-1-proteinase inhibitor. This method can be combined with a heat inactivation process.
Read the whole patent
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 December 15, 1998. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 15, 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.