Biological object detection apparatus
CA 2003131 C · Owner: Yamagishi, Fumio · Inventors: Shinzaki, Takashi; Ikeda, Hiroyuki; Igaki, Seigo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An apparatus for detecting a biological object includes a transparent plate, onto which an object to be detected is placed, for allowing a passage of projected light and reflected light used for an optical detection a light source located under the transparent plate for projecting a light beam used for a biological object detection toward a portion of the surface of the placed object toward which a light beam for detecting a characteristic pattern of the surface of the placed object is directed, and a light detection unit located below the transparent plate for receiving the light projected from the light source and subsequently reflected by the surface of the object placed on or pressed …
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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 November 16, 1989 and granted June 23, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 16, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 16, 2011.
- 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.