Process for purifying proinsulin-like materials
CA 1284249 C · Owner: Dimarchi, Richard Dennis · Inventors: Dimarchi, Richard Dennis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is provided for separating impurities from an impure mixture containing proinsulin-like material, which comprises:, (1) applying said mixture to a reverse phase macroporous acrylate ester copolymer resin support at a pH of from about 7 to about 10; and, (2) eluting said proinsulin-like material from said support with an aqueous eluant having a pH of from about 8 to about 11 and containing from about 10% to about 30% by volume of an organic diluent selected from the group consisting of acetone aceto-, nitrile, and a combination of acetone and acetonitrile.
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 May 14, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 14, 2008.
- 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.