Inflatable blanket having selective airflow patterns
CA 2233669 C · Owner: Mallinckrodt Inc. · Inventors: Kappel, Thomas F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to blankets for use with forced air convection systems, wherein the blankets have selective airflow patterns through the lower sheet of the blanket. In particular air passes through perforations in , the lower sheet of the blanket only through selective areas and/or through , perforations of different sizes.
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 October 15, 1996 and granted April 1, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 15, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 15, 2018.
- 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.