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:
Aug. 12, 2008
Filed:
May. 15, 2003
Koji Sugioka, Wako, JP;
Ya Cheng, Wako, JP;
Katsumi Midorikawa, Wako, JP;
Riken, Saitama, JP;
Abstract
A shape with a substantially perfect circle is obtained as a processed shape such as a modified shape or a worked shape at a light focus point in a cross-section in a direction parallel to an advance direction of a femtosecond laser light beam. A section in a direction perpendicular to an advance direction of a laser light beam emitted from a femtosecond laser () is formed in a predetermined shaped. The laser light of which sectional shape in the direction perpendicular to the advance direction is formed in the predetermined shape is entered into a lens (). The light is focused by the lens inside a transparent material () and processes the inside of the transparent material.