Yeast host strains with defects in n-glycosylation
CA 2103522 C · Owner: Boehringer Mannheim Gmbh · Inventors: Kopetzki, Erhard; Lehnert, Klaus; Lehle, Ludwig
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Saccharomyces mutants with defects in N-glycosylation which are obtainable by 3H-mannose suicide selection introduction of one or several selective markers selection of those strains which, after transformation with the plasmid YEpL/GOD, secrete 10 mg/l GOD or more into the culture medium after culture under standard conditions, are allelic to the ngd mutations in Saccharomyces cerevisiae, DSM 7042, DSM 7338 DSM 7160, and/or 7340 and express proteins with a uniform carbohydrate structure.
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 August 6, 1993 and granted July 7, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 6, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 6, 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.