Apparatus for activating silicic acid in water
CA 2089408 A1 · Owner: Ohe, Takeo · Inventors: Ohe, Takeo; Kawano, Norio
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for activating silicic acid contained in water, in which a helical antenna which generates an oscillating magnetic/electric field by use of a high-frequency power source and has a length 1, 1/2 or 1/4 times as long as the wavelength of the high-frequency wave is disposed in the direction of the central axis of a cylindrical tank, a water inlet pipe provided with a water injection pipe member for introducing water into the tank is disposed at the top or in the upper part of the side wall of the tank; a water drain pipe is disposed at the bottom or in the lower part of the tank; and the angle .THETA. formed by the axis of the injection pipe and the straight line connecting a …
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 February 12, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 12, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 12, 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.