Coolant device for personal use
CA 2014128 C · Owner: Lafond, Harvey · Inventors: Smyl, Felix; Lafond, Harvey
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cooling device for personal use comprising a visored cap having an interior surface area that encircles and covers the head of the wearer, said interior surface having attached to a portion of it's circumference a fabric container having a slit on it's one side so as to form an opening to accept the coolant means, said coolant means consisting of a flexible plastic envelope having a plurality of individually sealed compartments which enclose a liquid or semi-liquid gel having a lower freezing point than water.
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 April 9, 1990 and granted April 13, 1993. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 9, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 9, 2012.
- 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.