Colour analyser
CA 1210505 A · Owner: N.V. Philips'Gloeilampenfabrieken · Inventors: Van Meel, Franciscus A.M.M.; Maassen, Egbertus J.P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PHN 10.637 10 13.3.1984, ABSTRACT:, Colour analyser. A colour analyser for determining the exposure time required for printing colour photographs by means of an enlarger, which analyser comprises a measuring unit (1) in which are located preferably three photoelectric cells (5,6,7), this analyser further being provided with a control unit (2) which is electrically connected to the measuring unit (1) and in which is included an electric circuit (17), by means of which the exposure time is determined. According to the invention the characteristic, values of the colour components blue green, and red, measured by the cells for a test print as electric signals generated by the cells, such as …
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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 August 26, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 26, 2003.
- 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.