Rapid water activity determining device and method
CA 1097941 A · Owner: United States (Government Of The) Of America As Represented By The Secre Tary Of The Army · Inventors: Garber, Esther B.; Cox, Lloyd
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus and method for determining the water activity (Aw) of a water-containing composition, such as a food within approximately, 10 minutes, by rapidly establishing equilibrium between the watercontaining composition and the atmosphere with which it is in contact while maintaining the temperature substantially constant and determining the dew point of this atmosphere, from which the water activity is calculable from the ratio of the partial water vapor pressure at the dew point to the vapor pressure of pure water at the temperature of the atmosphere with which the water-containing composition is in equilibrium.
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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
- Granted March 24, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 24, 1998.
- 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.