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.

Date of Patent:
Jan. 06, 2009

Filed:

Dec. 06, 2002
Applicants:

Takamasa Harada, Kikari Inzai-machi, JP;

Fumio Kita, Wiesbaden, DE;

Andreas Zimmermann, Griesheim, DE;

Andreas Altherr, Spiesen-Elversberg, DE;

Martin Mennig, Quierschied, DE;

Peter W. Oliveira, Saarbruecken, DE;

Helmut Schmidt, Saarbruecken-Guedingen, DE;

Inventors:

Takamasa Harada, Kikari Inzai-machi, JP;

Fumio Kita, Wiesbaden, DE;

Andreas Zimmermann, Griesheim, DE;

Andreas Altherr, Spiesen-Elversberg, DE;

Martin Mennig, Quierschied, DE;

Peter W. Oliveira, Saarbruecken, DE;

Helmut Schmidt, Saarbruecken-Guedingen, DE;

Assignee:

Tomoegawa Co., Ltd., Tokyo, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 5/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

The invention relates to an alternative composite mask that is substantially composed of a transparent support film coated with a transparent polymer matrix that contains light-absorbing pigment particles or metal particles having an average particle size dranging between 0.5 and 10 μm.


Find Patent Forward Citations

Quick Actions:

Harada, Takamasa. (2009). Composite mask for producing a diffuser (U.S. Patent No. 7473521). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7473521

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