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:
May. 23, 2006
Filed:
Sep. 14, 2005
Kazuaki Ohkubo, Takatsuki, JP;
Mitsuhiko Kimoto, Nara, JP;
Yuriko Kaneko, Nara, JP;
Mika Sakaue, Hirakata, JP;
Makoto Horiuchi, Sakurai, JP;
Kazuaki Ohkubo, Takatsuki, JP;
Mitsuhiko Kimoto, Nara, JP;
Yuriko Kaneko, Nara, JP;
Mika Sakaue, Hirakata, JP;
Makoto Horiuchi, Sakurai, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
An incandescent bulb filament having a flat Light-emitting surface and high Lamp efficiency and an incandescent bulb using this filament are provided. This incandescent bulb filament is characterized in that it is a filament of ribbon shape placed on one plane, and it includes: spaced portions which are placed side by side with spaces; and connecting portions which connect the spaced portions electrically in series. Each spaced portion has a thickness that is one half the width of the spaced portion or more, and the space between at least one pair of adjacent spaced portions is less than five times the width of the spaced portion.