Method for analyzing oligomeric proanthocyanidin (opc)
CA 2575135 C · Owner: Suntory Limited · Inventors: Nakahara, Koichi; Fukui, Yuko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a novel method for assaying OPC contained in natural substances, foods and beverages pharmaceuticals and/or cosmetics. The present invention is a novel method for assay of OPC which assays anthocyanidin, obtained by hydrolysis of OPC to determine the total amount of , OPC and elucidates the proportions of the polymerization degrees of OPC by high performance liquid chromatography (HPLC) to determine the contents of the respective polymers in OPC.
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 July 27, 2005 and granted January 21, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 27, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.