Colostrum fraction, preparation and use thereof as cell culture media supplement
CA 2121472 C · Owner: Allen, Timo · Inventors: Allen, Timo; Pakkanen, Raimo; Kanttinen, Ari
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a colostrum fraction having a low endotoxin protein and immunoglobulin concentration. According to the invention, the colostrum fraction is prepared by ultrafiltration of colostrum pretreated in a desired manner by using a membrane having a cut off of 100,000. The invention is further concerned with the use of the colostrum fraction as a supplement in cell culture media, and with cell culture media containing it.
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
- Filed October 2, 1992 and granted February 17, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 2, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 2, 2014.
- 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.