The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 03, 1990
Filed:
Oct. 28, 1988
Takashi Osawa, Kanagawa, JP;
Katsuo Murakami, Kanagawa, JP;
Yoshinori Anzai, Kanagawa, JP;
Takeo Saikatsu, Kanagawa, JP;
Seishiro Mitsuhashi, Kanagawa, JP;
Kazutoshi Ishikawa, Kanagawa, JP;
Yujiro Kamano, Kanagawa, JP;
Hiroshi Ito, Kanagawa, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
Hot-cathode discharge fluorescent lamps filled with low pressure rare gas being discharge fluorescent lamps filled with low pressure rare gas with a tube diameter of 16 mm or less provided with a pair of electrodes on both ends of a glass tube which operate as a hot-cathode in a stable discharge condition, having a fluorescent material layer on the inside surface of the bulb, filled with a luminous gas therein, and which is illuminated with irradiation from discharge in the luminous gas, in which at least one gas of He, Ne, Ar, and Kr are filled in addition to Xe as the luminous gas in an amount that the percentage of additional gas volume to total gas volume exceeds 50%.