Colloidal particles of solid flame retardant and smoke suppressant compounds and methods for making them
CA 2220187 C · Owner: Mclaughlin, John R. · Inventors: Mclaughlin, John R.; Podwirny, Philip S.; Morley, John C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention concerns finely divided particles of compounds that provide flame retardancy and/or smoke suppressant properties to fibers textiles, polymeric articles, paper, paint coating and insulation. More , particularly the present invention concerns colloidal-sized particles of hydrated salts, organic phosphates, metal borates polyamides, solid , halogenated flame retardants with a melting point greater than 250 ~C molybdenum compounds, metallocenes, antimony compounds zinc compounds, bismuth compounds and other solid chemicals which act as flame retardants or smoke suppressants. The present invention also concerns various milling processes to reduce these materials to …
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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 June 7, 1996 and granted October 23, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended June 7, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 7, 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
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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.