Deodorant composition in the form of gel containing chlorine dioxide
CA 2031124 C · Owner: Iwahashi, Takashi · Inventors: Iwahashi, Takashi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A new deodorant composition in the form of gel containing chlorine dioxide is now provided which, comprises a gel product obtained by gelling an aqueous solution of stabilised chlorine dioxide with use of a polyethylene-imine having a molecular weight of from 10,000 to 100,000 and of an epoxide crosslinking agent. The gel typed deodorant composition according to this invention is very effective for deodorizing acidic odor-generating substances such as sulfur-containing compounds, has an increased strength because of its solid gel form and a long-term stability and is easy, to handle including the time of exchanging the deodorant composition for another.
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 November 29, 1990 and granted September 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 29, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 29, 2012.
- 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.