Luminaire assembly
CA 2257038 C · Owner: Holophane Corporation · Inventors: Fouke, Herbert Alan
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An improved luminaire assembly having an HID lighting source with an upper reflector portion and a lower refractor portion. This luminaire assembly provides downlight control and glare control properties for a concentrated narrowly spaced downwardly directed illumination. The downward light control below horizontal to uniformly distribute downward directing the light rays below horizontal to angle in the range between 30° to 50° vertical.
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 24, 1998 and granted July 31, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 24, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 24, 2020.
- 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.