Therapeutic pad and method
CA 2304818 C · Owner: Vesture Corporation · Inventors: Owens, Byron C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A therapeutic pad for heating or cooling has a liquid absorbent to prevent liquid leakage in the event the sealed envelope of the pad is ruptured. The method of forming the pad includes vacuuming the thermoplastic envelope prior to sealing. The pad can be used alone or with a comforter to provide warmth or to remove heat from the body of the user.
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 February 25, 1991 and granted August 27, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 25, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 2013.
- 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.