Cloned pullulanase
CA 2173453 C · Owner: Bower, Patricia A. · Inventors: Bower, Patricia A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method is disclosed for the expression of an active pullulanase enzyme in a microorganism host. In one aspect a DNA construct, contains a sequence encoding the pullulanase enzyme except for the nucleotides necessary to encode the first two amino acids in mature pullulanase and regulating allowing expression of the coding sequence in a microorganism host. An advantageous DNA construct contains regulatory sequences permitting expression of the pullulanase in a yeast cell.
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 4, 1994 and granted February 13, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 4, 2016.
- 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.