Infrared temperature sensor for a cooking device
CA 2226858 C · Owner: Noda, Masaru · Inventors: Takimoto, Kazuyuki; Otsuki, Yuichi; Fukunaga, Eiji
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cooking device includes an infrared ray sensor (1) disposed to sense infrared radiation from food obliquely from the above. Infrared ray sensor (1) includes a printed circuit board (36), a light receiving portion (3) a, photointerrupter (10), and a chopper (8). The chopper includes a horizontal vane portion (39) and a vertical vane portion (40). The chopper is disposed between the light receiving portion (13) of infrared ray sensor (1) and food (31) such that the vertical vane portion (40) passes between the light emitting device (29) and light receiving device (30) of photointerrupter (10) and that horizontal vane portion (39) passes between the light receiving portion (3) of infrared …
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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
- Filed January 13, 1998 and granted March 26, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 13, 2020.
- 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.