Process for the preparation of human antithrombin iii (atiii), vectors and host cells suitable for this purpose, biologically active atiii obtained in this way and medicaments containing the latter
CA 1305932 C · Owner: ZETTLMEIßL, GERD · Inventors: Broker, Michael; ZETTLMEIßL, GERD; Ragg, Hermann
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Human antithrombin III (ATIII) which has progressive inhibitor activity and is stimulated by heparin is advantgeously obtained by expression after cotransfection of mammalian cells whose dihydrofolate reductase (DHFR) activity is deficient (dhfr-) with, a) vectors which contain the ATIII cDNA and, b) vectors which carry the DHFR gene in particular after gene amplification using methotrexate.
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 August 4, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 4, 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.
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.