Separation process
CA 1320164 C · Owner: Monsanto Company · Inventors: Holmes, Paul Arthur; Lim, Guan Boh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
B.32943, "Separation Process" An aqueous suspension of micro-organsim cells containing a 3-hydroxybutyrate polymer are subjected to a proteolytic enzyme digestion or a surfactant digestion in order to solubilize cell material other than the 3-hydroxybutyrate polymer. Prior to, or during the digestion but before any, proteolytic enzyme digestion step the suspension is heated, to at least 80°C to denature nucleic acids which otherwise hinder separation of the 3-hydroxybutyrate polymer containing residue from the suspension.
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 July 13, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 13, 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.