A fire retardant and a method for production thereof
CA 2494914 C · Owner: Nilsson, Jens Birger · Inventors: Nilsson, Jens Birger
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fire retardant composition and a method of producing thereof. The composition comprising water, a highly concentrated alkali at least one of or , a, combination thereof of anhydrous citric acid, citric acid, acetic acid or a related, salt thereto. The composition also includes phosphate as well as an alkali metal, salt or compound from at least one of lithium sodium and/or potassium cation, in combination with at least one of an acetate bicarbonate, carbonate and/or, hydroxide anion. The composition is then adjusted to a pH value around 6.5 to about 7.0 by adjusting the amounts of highly concentrated alkali and/or the citric acid/acetic acid respectively.
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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 August 5, 2003 and granted January 15, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended August 5, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 5, 2025.
- 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.