Random copolymer comprising d-(-)-3-hydroxybutyrate units and d-(-)-3-hydroxyvalerate, and process for production thereof
CA 1338142 C · Owner: Mitsubishi Gas Chemical Company, Inc. · Inventors: Doi, Yoshiharu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A random copolymer comprising less than 50 mole% of D-(-)-3-hydroxybutyrate units and more than 50 mole% of D-(-)-3-hydroxyvalerate units, the percentages being based on the total amount of the two units. A process for producing the random copolymer which comprises (1) cultivating a microorganism having the ability to produce poly(3-hydroxybutyrate) to grow and proliferate the cells of the microorganism, (2) cultivating the cells in the presence of a valeric acid or in the copresence of a valeric acid and an n-butyric acid while limiting the amount of nitrogen or phosphorus to produce and accumulate a random copolymer comprising D-(-)-3-hydroxybutyrate units and D-(-)-3-hydroxyvalerate …
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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 March 12, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 2013.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.