Infrared detector
CA 1261941 A · Owner: Matsushita Electric Works, Ltd. · Inventors: Kondo, Mikio; Morimoto, Makoto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An infrared detector is arranged so that a detection-input processing circuit part including an infrared sensor mounted of a circuit board is housed as isolated from ambient air in a chamber inhibiting any ambient air inflow, for sensing infrared rays emitted from a human body or the like object as condensed by a condenser irrespective of the ambient air conditions the, sensing ability of the infrared sensor the accuracy of which is likely to be easily deteriorated even with a very small change in the ambient temperature can be thereby stabilized, and a highly accurate infrared detection can be constantly achieved.
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 September 26, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 26, 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.