Copolymer production
CA 1313635 C · Owner: Monsanto Company · Inventors: Senior, Peter James; Richardson, Kenneth Raymond; Collins, Stephen Hugh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, Copolymer Production Copolymers of poly(B-hydroxybutyric acid) and poly(B-hydroxyvaleric acid) are produced by culturing alcohol-utilising strains of Alcaligenes eutrophus on a carbon source including primary alcohols having an odd number of carbon atoms such as propan-1-ol. The copolymers may be used in the production of biodegradable plastic resins films, coatings and the like.
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 February 16, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 16, 2010.
- 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.