Cool pack
CA 1322997 C · Owner: Fujiwara, Masatoshi · Inventors: Inagaki, Hiroyuki; Umemura, Eiji; Fujiwara, Masatoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cooling pack comprises at least one coolant carrier (10) for keeping coolant held thereon and a container (11) adapted to enclose the coolant carrier (10). The coolant carrier (10) consists of liquid absorbent substrate (12) and liquid absorbent polymer particles (13). The container (11) has at least a pair of flat layers opposed to each other which are adapted to introduce liquid into the container (11). The cooling pack can provide benefitial features such as to avoid exudation of liquid absorbent polymer particles (13), to introduce liquid into the container (11) in a short period of time, and to obtain non-sticking of the container (11) refrigerated condition.
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 October 12, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 12, 2010.
- 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.