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. 15, 2008
Filed:
Jul. 22, 2003
Applicants:
Hirotaka Koyo, Osaka, JP;
Keiji Tsunetomo, Osaka, JP;
Inventors:
Hirotaka Koyo, Osaka, JP;
Keiji Tsunetomo, Osaka, JP;
Assignee:
Nippon Sheet Glass Company, Limited, Osaka, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03C 3/089 (2006.01); C03C 3/091 (2006.01); C03C 3/093 (2006.01);
U.S. Cl.
CPC ...
Abstract
A glass for laser processing of the present invention can be laser-processed by causing ablation or evaporation by laser beam energy absorbed therein, wherein the glass for laser processing has a composition that satisfies the following conditions:60≦SiO+BO≦79 mol %;5≦AlO+TiO≦20 mol %; and5≦LiO+NaO+KO+RbO+CsO+MgO+CaO+SrO+BaO≦20 mol %,where 5≦TiO≦20 mol %. The present invention can provide a glass for laser processing that has a low laser processing threshold value as well as a low thermal expansion coefficient.