Spectrophotometer
CA 1136886 A · Owner: Miles Laboratories, Inc. · Inventors: Kramer, Donald L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Apparatus for measuring transmitted light is described. The apparatus comprises a spectrophotometer which includes a light source; first and second diffusion chambers; a cuvette chamber and photodetection means. The apparatus also includes light transmitting channels through which light can pass from said source to the first diffusion chamber, from the first diffusion chamber through the cuvette chamber to the second diffusion chamber and from the second, diffusion chamber to the photodetector means. In the preferred embodiment the first and second diffusion chambers are light diffusing integrating spheres, and a filter is present in the light transmission channel between the light source …
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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 7, 1982. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 7, 1999.
- 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.