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. 24, 2001
Filed:
Sep. 22, 1998
Applicant:
Inventors:
Tadashi Koyama, Osaka, JP;
Keiji Tsunetomo, Osaka, JP;
Masahiro Oikawa, Osaka, JP;
Kenjiro Hamanaka, Osaka, JP;
Assignee:
Nippon Sheet Glass Co., LTD, , JP;
Primary Examiner:
Int. Cl.
CPC ...
C03B 1/900 ;
U.S. Cl.
CPC ...
C03B 1/900 ;
Abstract
A laser processing method for removing glass by melting, evaporation or ablation from sheet-like glass substrate for forming microscopic concavities and convexities. Diffraction grating and planar microlens array obtained thereby.