Odorizing mixture for an odorless gas fuel
CA 2562002 C · Owner: Arkema France · Inventors: Charles, Patrick
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composition which can be used as an odorizing agent for a gas fuel more particularly natural gas, comprising: 0.1 49.9 % alkyl sulfur (I) of formula R?1¿-S-R?2¿ wherein R?1¿ and R?2¿ are either the same or different and represent an alkyl radical having 1 - 4 carbon atoms; or R?1¿ and R?2¿ when taken with the sulfur atom to which they are attached represent a saturated or unsaturated cycle consisting of 3 - 5 carbon atoms optionally substituted by a C¿1?-C¿4? alkyl radical or C¿1?-C¿4? alkenyl radical; 50 99.8 % alkyl acrylate (II) wherein the alkyl radical comprises 1 -12 carbon atoms preferably 1 - 8; 0.001 0.1 % of a compound (III) which inhibits the polymerization of the alkyl …
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 5, 2005 and granted November 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 5, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.