Meat freshness measuring apparatus
CA 2024905 C · Owner: Sumitomo Electric Industries, Ltd. · Inventors: Kanda, Masahiko
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A meat freshness measuring apparatus measures freshness of meat by detecting changes in a pigment contained in the meat. For this purpose the meat (2) is, exposed to rays of light of different wavelengths applied from a light source (1), and the rays obtained from the meat are separated to spectra for the respective wavelengths, which are received by a photoelectric conversion element (4). Spectrum data for each wavelength is amplified and then the amplified data is converted to a digital signal by an A/D converter (7) whereby the, digital signal is stored in a RAM (12). Based on the stored spectrum data and using a prescribed equation of calculation, a content of the pigment in the meat is …
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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 September 7, 1990 and granted October 4, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 7, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 7, 2012.
- 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.