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:
Apr. 04, 2006
Filed:
Dec. 12, 2002
Yoshiaki Ikuta, Yokohama, JP;
Shinya Kikugawa, Yokohama, JP;
Noriaki Shimodaira, Yokohama, JP;
Akio Masui, Tokyo, JP;
Shuhei Yoshizawa, Tokyo, JP;
Yoshiaki Ikuta, Yokohama, JP;
Shinya Kikugawa, Yokohama, JP;
Noriaki Shimodaira, Yokohama, JP;
Akio Masui, Tokyo, JP;
Shuhei Yoshizawa, Tokyo, JP;
Asahi Glass Company, Limited, Tokyo, JP;
Abstract
A synthetic quartz glass for optical use, to be used by irradiation with light within a range of from the ultraviolet region to the vacuum ultraviolet region, which contains fluorine, which has a ratio of the scattering peak intensity of 2250 cm(I) to the scattering peak intensity of 800 cm(I), i.e. I/I, of at most 1×10in the laser Raman spectrum, and which has an absorption coefficient of light of 245 nm of at most 2×10cm.