Monoclonal antibody to acetylated lysine residues in recombinant bovine somatotropin
CA 2062959 C · Owner: Pharmacia & Upjohn Company · Inventors: Walker, Gustavus A.; Evans, Diane M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provided are hybridomas for producing monoclonal antibodies against acetylated lysine residues of rbSt. The antibodies are specific to the presence of at least a single acetylated lysine in a protein and can differentiate between .alpha.-acetyl and .epsilon.-acetyl lysine as free amino acids. The invention provides a guantitative and efficient test for acetylated impurities in recombinant proteins prepared using E.coli as the host.
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 July 16, 1990 and granted June 29, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 16, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 16, 2012.
- 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.