Electrodeless lamp with improved efficacy
CA 2173490 A1 · Owner: Kamarehi, Mohammad · Inventors: Kamarehi, Mohammad; Turner, Brian; Levine, Leslie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A sulfur, selenium, and/or tellurium based lamp for providing visible light. The lamp (2) is operated in a regime for providing high efficacy wherein the ratio of the volume to surface area of the bulb is greater than .45 cm, the concentration of the sulfur, selenium or tellurium, is less than 1.75 mg/cc, and the power density is between about 100 watts/cc and 5 watts/cc.
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 October 17, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 17, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 17, 2016.
- 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.