Agent for treatment of arthritic disease
CA 2364451 C · Owner: Richter Gedeon Vegyeszeti Gyar Rt. · Inventors: Serizawa, Isao; Maekawa, Keisei; Illes, Janos
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides an agent for treatment of arthritic diseases such as rheumatoid arthritis that has for its active ingredient a complex of hyaluronic acid and zinc. This complex synergistically inhibits proliferation of synovial cells and suppresses matrix metalloproteinase MMP-9, which is produced by synovial cells, as compared with its constituents hyaluronic acid and zinc, alone.
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 March 10, 2000 and granted August 2, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 10, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 10, 2022.
- 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.