A process and apparatus for purifying hydrogen bromide
CA 2461536 A1 · Owner: Natwora, James Philip, Jr. · Inventors: Salim, Sateria; Holmer, Arthur Edward; Natwora, James Philip, Jr.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for removing impurities such as oxygen nitrogen, carbon monoxide, hydrogen, water (moisture) carbon dioxide, hydrogen chloride, methane and trace metals from crude hydrogen bromide and the apparatus for purifying such crude hydrogen bromide.
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 September 16, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 16, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 16, 2024.
- 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.