Aquameter
CA 2119497 C · Owner: Kaiho, Mamoru · Inventors: Kaiho, Mamoru; Yasuda, Hajime
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A device for measuring the moisture content of a moisture-containing sample, which includes an electronic balance for measuring the weight of an airtight sample holder containing the sample and placed on a receiver thereof. The sample holder has a side wall provided with a gas discharge pipe extending horizontally outwardly from therefrom. A gas feed tube having a front portion inserted into the gas discharge pipe of the sample holder is held without contacting with the inside wall of the discharge pipe. An infrared lamp is disposed above the electronic balance to heat the sample in the sample holder and to remove the moisture from the sample. By feeding an inert gas through the feed tube …
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 21, 1994 and granted January 27, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 21, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 21, 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.