Fire retarded solvents
CA 2064667 C · Owner: Trysol Canada Ltd. · Inventors: Loree, Dwight N.; Thorssen, Donald A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fire retarded solvent composition includes a mixture of at least one flammable organic solvent; and a mixture of at least one brominated hydrocarbon in an, amount sufficient to decrease the flame propagation rate of the composition and preferably increase the flash point of the solvent composition. The brominated hydrocarbon may be selected from the group consisting of dibromoethane, dibromomethane, chlorodibromomethane bromochloromethane, dibromodifluoromethane dibromodifluoroethane, 1,2,dibromo-1.1-difluoroethane chlorodibromofluoromethane, l,2dibromotetrafluoroethane and l,2dibromoethylene. Dibromomethane and bromochloromethane are preferred. When used as an oil and gas operation …
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 March 30, 1992 and granted March 21, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended March 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 30, 2014.
- 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.