Lighting apparatus for a discharge lamp
CA 1201760 A · Owner: Mitsubishi Denki Kabushiki Kaisha · Inventors: Adachi, Hiromi; Iwaya, Shoichi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A lighting apparatus for a discharge lamp in which said lighting apparatus (4) is coupled in series with a discharge lamp (3), said lighting apparatus (4) is composed of a capacitor with a ferroelectric dielectric material having main component Barium-titanate (BaTiO3) said capacitor satisfying the impedance ratio of the first impedance (Z1) which is obtained by measuring current for alternate voltage of 5 volts to the second, impedance (Z2) which is obtained by measuring current for alternate voltage of 500 volt/mm, being less than 1/10 (Z2/Z1 is less than 1/10), thus, the size of the lighting apparatus is small, and the power loss in the same is reduced.
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 March 11, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 11, 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.