Electrical incandescent lamp having an ir-reflective coating
CA 2311941 A1 · Owner: Binder, Ulrich · Inventors: Bunk, Axel; Binder, Ulrich; Muller, Sigbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to an electric incandescent lamp notably an , incandescent halogen lamp (4) comprising a bulb (5) having a layer (9) which reflects infrared radiation and a flat illuminating body (10) which defines an imaginary illuminating plane and is positioned inside the bulb (5). The bulb (5) is not rotationally symmetrical in relation to the axes situated in the illuminating plane. Instead, the bulb (5) has a non-rotationally symmetrically, flattened shape adapted to the flat shape of the illuminating body (10). It notably has an ellipsoid shape whose shortest semi-axis is , perpendicular to the imaginary illuminating plane of the illuminating body (10).
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 September 13, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 13, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 13, 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.