Intumescent material
CA 1295782 C · Owner: Dixon International Limited · Inventors: Milner, Bruce Alan; Malcolm-Brown, Tessa; Southern, Eric
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An intumescent material comprises expandible graphite in a polymeric binder. The binder may be a flexible or elastomeric binder or a formeldehyde resin. A suitable flexible binder is a polymer selected from vinyl acetate polymers, styrene polymers vinyl, chloride polymers, acrylic polymers vinyl butyral polymers, melamine/urea/phenol formaldehyde resins polyesters and phenolic, resins. A suitable elastomeric binder is a rubber. A suitable formaldehyde resin is melamine formaldehyde resin urea formaldehyde, resin, phenol formaldehyde resin of resorcinol formaldehyde resin.
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 February 11, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 11, 2009.
- 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.