Unsymmetrical elliptical reflector for spatial illumination
CA 2240669 C · Owner: Braginsky, Mark B. · Inventors: Braginsky, Mark B.; Bjorner, Johannes A.S.; Pardee, Bennett
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An unsymmetrical elliptical reflector for spatial illumination. The invention includes a novel reflector and a novel illumination system including the novel reflector. The novel reflector (26) includes first (27) and second (29) non-, symmetrical, elliptical elongate reflector surfaces. The eccentricities of the first and second reflector surfaces are different such that they have common first foci (30) and different conjugate foci (32 34). The novel illumination , system incorporates the novel reflector and provides intense focused , illumination at two foci (32 34) positioned at two heights above a conveyor surface (12). The illumination intensity between the two foci is sufficiently …
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
- Filed December 19, 1996 and granted July 11, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 19, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 19, 2018.
- 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.