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:
Feb. 07, 2012
Filed:
Sep. 02, 2008
Masayoshi Kumagai, Hamamatsu, JP;
Kenshi Fukumitsu, Hamamatsu, JP;
Koji Kuno, Hamamatsu, JP;
Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
Starting point regions for cuttingextending along lines to cutare initially formed in an object to be processed. The starting point regions for cuttinghave modified regionsformed by irradiating the objectwith laser light while locating a converging point within the objectand are formed in parts extending along the lines to cutexcluding portionsintersecting the lines to cut. This makes the starting point regions for cuttingmuch less influential when cutting the objectfrom the starting point regions for cuttingacting as a start point, whereby bars with precise cleavage surfaces can reliably be obtained. Therefore, it is unnecessary to form a starting point region for cutting along the lines to cutin each of a plurality of bars, whereby the productivity of semiconductor laser elements can be improved.