Novel zirconium salts and their synthesis
CA 2129505 C · Owner: Onyszkewycz, Maria · Inventors: Tencza, Thomas; Markarian, Herand M.; Onyszkewycz, Maria
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved process for the preparation of aluminum/zirconium/glycine complexes is provided which is, particularly suited to the production of novel ZAG salt complexes having enhanced antiperspirant efficacy. The aluminum/zirconium/glycine complexes produced thereby are also characterized and claimed. Antiperspirant compositions comprising the novel aluminum/zirconium/glycine complexes are also taught.
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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
- Filed August 4, 1994 and granted January 26, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 4, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 4, 2016.
- 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.