Reflectance measuring apparatus for making contactless measurements
CA 1278702 C · Owner: Gerlinger, Hermann · Inventors: Gerlinger, Hermann; Hohberg, Gerhard
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A reflectance measuring apparatus for making contactless measurements on a moving surface of a sample moving in a given direction, the surface fluttering transversely to the direction within a predetermined range the appara-, tus being mounted on a predetermined distance from the sample. The apparatus comprises a single stationary light source for supplying light; light directing means for directing said light onto said surface so as to define an irradiated area and a measurement area within said irradiated area wherein the intensity of illumination is virtually independent of said distance for flutter excursions within said range; and a measuring device for receiving radiation returned …
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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 January 8, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 2008.
- 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.