Addition of odorants to gases for leak detection
CA 2452464 A1 · Owner: Air Products And Chemicals, Inc. · Inventors: Puri, Pushpinder Singh; Hansel, James Gordon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for dispensing an odorant to a fluid in a vessel having an interior, volume containing the fluid includes at least one odorant material and an odorant-, permeable material. The at least one odorant material is disposed in the interior volume, the odorant material having at least one detectable odor. The odorantpermeable, material encapsulates the odorant material.
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 December 9, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 9, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 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.