Liquid membrane
CA 1258604 A · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Yamada, Katsuya; Asako, Shigeru; Okita, Koichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A liquid membrane is disclosed which comprises, a solvent, an active species capable of performing facilitated transport of a specific gas and a support, for maintaining a liquid mixture of the solvent and the active species, wherein the active species has the structure represented by the following formula:,
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
- Granted August 22, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 22, 2006.
- 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.