Intumescent fire-retardant and electrically-conductive coating material
CA 2072024 C · Owner: Hastings, Otis H. · Inventors: Hastings, Otis H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a fire-retardant coating material which includes, a fluid intumescent material and conductive particles of various sizes dispersed or, suspended therein for particular applications. The fluid intumescent material includes a, foaming agent, a blowing agent gas source a carbonific or charring agent, a , filmforming binder, a solvent and, in some cases a pigment or filler. The , conductive, particles are formed of a substrate and a conductive coating.
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 19, 1990 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 19, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 19, 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.