Detector of fourier transform infrared spectrometer
CA 2033401 C · Owner: Shimadzu Corporation · Inventors: Yoshikawa, Osamu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A detector comprises a pyroelectric detector a temperature, control mechanism including a thermoelectric heating/cooling element for keeping the temperature of the pyroelectric detector constant a temperature sensor, and a temperature controller responsive to the detection signal from the temperature sensor for controlling power supply to the thermoelectric heating/cooling element and control, unit provided within the temperature controller for starting and shutting off the power supply to the thermoelectric heating/cooling element only except for collecting data from the pyroelectric detector.
Read the whole patent
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 December 28, 1990 and granted January 9, 1996. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 28, 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.