Carbon monoxide and hydrogen gas detection device
CA 1194113 A · Owner: Hitachi, Ltd. · Inventors: Yoshikawa, Masanori; Miyoshi, Takahiko; Taguchi, Mitsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract:, The present invention relates to a gas detection device characterized by the detection of CO as distinct from H2. The optimum structure of the device has an electrolytic cell wherein the electrode surfaces of a working electrode, a counter electrode and a reference electrode are kept in contact with electrolyte. Open sides at both ends of the vessel containing the electrolyte are sealed by the working electrode, the counter electrode and the reference electrode. A voltage of a predetermined magnitude is applied between the working electrode and the reference electrode. The sensitivity of the working electrode to carbon monoxide and hydrogen gas is smaller than that of the …
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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
- Granted September 24, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 24, 2002.
- 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.