Antibacterial porous inorganic capsule and a process for producing the same
CA 2089611 A1 · Owner: Nakamura, Kenji · Inventors: Yanase, Toshiro; Mizuguchi, Masaaki; Nakamura, Kenji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An Antibacterial Porous Inorganic Capsule and a Process for Producing the Same, An antibacterial porous inorganic capsule comprises one or more than one antibacterial agents and water-insoluble porous inorganic compound encapsulating the antibacterial agents. The antibacterial agent or agents are selected from antibacterial zeolite, antibacterial zirconium antibacterial apatite, silver oxide, zinc oxide zinc, sulfide and copper sulfide. The antibacterial powder does not decrease its antibacterial effects when it is mixed with synthetic resin or binder, and the antibacterial powder is free from discoloration due to metal ions.
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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 February 16, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 16, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 16, 2015.
- 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.