Energy efficient fluorescent lamp
CA 1212984 A · Owner: Gte Products Corporation · Inventors: Bessone, Carlo S.; Roche, William J.; Sadoski, Tadius T.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A fluorescent lamp including a glass envelope having electrodes at its ends and having an inert gas fill in which a first phosphor layer is disposed on the inner surface of the envelope along with a second phosphor layer superimposed over the first layer. The inert gas is preferably substantially of a lighter weight inert gas than krypton gas and the envelope is of a diameter less than 1 1/2 inch diameter, preferably of one inch diameter. In a lamp fixture the lamp of this invention provides the same relative output as a prior art T12 lamp with substantially less energy consumption.
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
- Granted October 21, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 21, 2003.
- 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.