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:
Oct. 05, 2021
Filed:
Dec. 18, 2019
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Shinnosuke Takahashi, Nagaokakyo, JP;
Murata Manufacturing Co., Ltd., Kyoto-fu, JP;
Abstract
An emitter mesa and a base electrode are arranged on a base mesa on a substrate. A base wiring line on the base electrode is connected to the base electrode via base openings. The emitter mesa includes a plurality of emitter fingers having a planar shape that is long in one direction. The emitter fingers include first and second emitter fingers. The base openings are arranged so as to be spaced apart in a longitudinal direction from first end portions of the first emitter fingers and are not arranged in a region obtained by extending the second emitter finger in the longitudinal direction. An end portion of the second emitter finger that is near the base openings protrudes in the longitudinal direction beyond the end portions of the first emitter fingers that are near the base openings.