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:
Jan. 04, 2005
Filed:
Jul. 21, 2003
Applicants:
Tatsuji Nakajima, Tokyo-to, JP;
Koji Ichimura, Tokyo-to, JP;
Inventors:
Tatsuji Nakajima, Tokyo-to, JP;
Koji Ichimura, Tokyo-to, JP;
Assignee:
Dai Nippon Printing Co., Ltd., Tokyo-to, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B 900 ; B32B 702 ;
U.S. Cl.
CPC ...
Abstract
A silica layer is provided which is usable as a low refractive index layer undergoing no change in its refractive index. Further, a silica layer is provided which is highly productive and usable as a medium or high refractive index layer undergoing neither reduction in transmittance nor change in spectral colors. Still further, an antireflection film using these silica layers is provided.