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:
Jul. 26, 2005
Filed:
Dec. 14, 2001
Naoki Tsukiji, Tokyo, JP;
Satoshi Irino, Tokyo, JP;
Naoki Tsukiji, Tokyo, JP;
Satoshi Irino, Tokyo, JP;
The Furukawa Electric Co., LTD., Tokyo, JP;
Abstract
When manufacturing semiconductor elements, a group of semiconductor elements having a diffraction grating formed partly on the side of the facet from which laser light is emitted is formed collectively on a semiconductor wafer by using semiconductor process technologies. The semiconductor laser elements are arranged such that the light emitting facets are opposite to each other to thereby form each diffraction grating of the semiconductor laser elements arranged opposite to each other as one diffraction grating, cleaving this diffraction grating at respective cleavage planes to cut out laser bars, followed by the cleavage of cleavage planes to cut out semiconductor laser elements.