Liver function testing apparatus
CA 1333097 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 liver function testing apparatus measures values .DELTA.logT1 and .DELTA.logT2, corresponding to pulse wave signals obtained upon passage through a prescribed optical path in vital tissue, n times when a sensor having first and second light sources and a light receiving element is attached to a testee before injection of a specific dye. A value .alpha.0 is calculated by a two-variable statistical computation as to n .DELTA.logT1 and n .DELTA.logT2 on the basis of an operation expression of logT1 = .alpha.0logT2 and .DELTA.logT1 and, AlogT2 corresponding to pulse wave signals are measured in response to intensity levels of first light and second light passing through the vital tissue from …
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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 November 15, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 15, 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.