Apparatus for monitoring bloodstream
CA 1293535 C · Owner: Fujii, Hitoshi · Inventors: Fujii, Hitoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract of the Disclosure An apparatus for monitoring a bloodstream in a skin surface including a laser light source for emitting a laser beam, a cylindrical lens for expanding the laser beam, an objective lens for collecting light rays reflected by the skin surface and scattered by blood cells, a linear image sensor for receiving the reflected light rays via an objective lens A/D, converter for converting output signals read out of light receiving elements of the linear image sensor into digital signals, a memory for storing the digital signals, a calculating circuit for calculating a bloodstream velocity or a distribution of bloodstream and a display device for displaying the bloodstream …
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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 December 24, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 2008.
- 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.