Device for enabling an observer to verify the angle-dependent scattering behaviour of an object
CA 2353382 A1 · Owner: Fajmann, Peter · Inventors: Fajmann, Peter; Grosswang, Heinz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a device for enabling an observer visually to verify the angle-dependent scattering behaviour of an object. The device comprises a holding unit (2) having a measurement window (5) which can be moved into a defined relative position in relation to the object (4 4', 4'') and an , observation window (7) which is visible to the observer (8); a light supply (6) which is held by the holding unit (2) and directs substantially parallel light beams (9) onto the measurement window (5) at a defined angle (.alpha.); and a light-guiding device (11) which is also held by the holding unit (2) captures a plurality of light beams (10) moving outwards at different angles …
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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
- Filed December 2, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 2, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 2, 2021.
- 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.