Measuring head
CA 1314153 C · Owner: Mast, Fred · Inventors: Mast, Fred; Knus, Jean A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A measuring head for the determination of the optical reflectance properties of color measuring fields coprinted with color sheets includes an optical illuminating device having two Mangin mirrors and an aplanar system located in alignment with the Mangin mirrors in a central opening. The light emitted by a light source and reflected by the measuring area arrives in a glass rod and is fed through an optical measuring device into a light waveguide through which, the reflected light is fed into a spectrometer for spectral analysis.
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
- Granted March 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 9, 2010.
- 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.