Humidistat
CA 1330067 C · Owner: Durocher, Donald Francis · Inventors: Durocher, Donald Francis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
HUMIDISTAT, Abstract of the Disclosure There is disclosed a package with controlled humidity for storing products such as tobacco and food. The package is an enclosed container with a humidistat pad inside which pad serves as a spacer and holds a humectant solution in its liquid phase in an absorbent interior layer. The pad has a liquid impervious backing layer to protect the walls of the container from the liquid humectant solution. The pad also has a liquid permeable cover which can rapidly transfer the humectant solution deposited on it to the absorbent layer during filling of the container with the product.
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
- Granted June 7, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 7, 2011.
- 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.