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:
Dec. 11, 2007
Filed:
Jun. 17, 2005
Applicants:
Masashi Fukuyama, Inuyama, JP;
Yasunori Iwasaki, Nishikasugai-Gun, JP;
Akiyoshi Ide, Kasugai, JP;
Inventors:
Assignee:
NGK Insulators, Ltd., Nagoya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/30 (2006.01);
U.S. Cl.
CPC ...
Abstract
When a surface of a filter member on a multilayer film is defined as a first surface, a surface of the filter member on an quartz substrate as a second surface, an inner wall surface of a slit which faces the first surface of the filter member as a first inner wall surface, and an inner wall surface of the slit which faces the second surface of the filter member as a second inner wall surface, one or more of the first inner wall surface and the second inner wall surface of the slit, and the second surface of the filter member do not lie parallel to the first surface of the filter member.