Fire-retardant resin composition and fire retardant
CA 2014025 C · Owner: Kyowa Chemical Industry Co. Ltd. · Inventors: Miyata, Shigeo; Imahashi, Takeshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fire retardant comprising 100 parts by weight of a metal hydroxide and 0.1 to 50 parts by weight of an acrylic fiber, and a fire-retardant resin composition comprising 20 to 80 % by weight of a synthetic resin or rubber 80 to 20 % by, weight of a metal hydroxide and 0.1 to 10 parts by weight based on 100 parts by weight of the synthetic resin or rubber and the metal hydroxide in total, of an acrylic fiber. The present composition has improved fire retardancy free from degradation in mechanical strength and deterioration of water resistance, and the present fire retardant permits free coloring and releases no toxic smoke.
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 April 6, 1990 and granted November 2, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 6, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 6, 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.