Atomic absorption spectrophotometer providing simply derived background absorbance measurement
CA 1213446 A · Owner: The Perkin-Elmer Corporation · Inventors: Bohler, Walter; Barnard, Thomas W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to apparatus for utilizing the Zeeman (or Stark) effect for achieving background correction in an atomic absorption spectrophotometer using an electromagnetic optical effect for background correction and causing the spectrophotometer to provide time varying radiation. A radiation responsive device produces an output signal which varies in time and at certain times is proportional to the background absorption, and the radiation responsive device is responsive to a linearly increasing supply signal to produce an exponentially increasing output signal upon receiving a fixed radiation level. The specific improvement provided by this invention is a device for supplying the …
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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 4, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 4, 2003.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.