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.:

US 8144379 B1

PDF
Full Text
Expired
Date of Patent:
Mar. 27, 2012

Filed:

Sep. 18, 2009
Applicants:

Terumasa Ito, Tokyo, JP;

Kenji Tanaka, Tokyo, JP;

Atsushi Fukumoto, Kanagawa, JP;

Inventors:

Terumasa Ito, Tokyo, JP;

Kenji Tanaka, Tokyo, JP;

Atsushi Fukumoto, Kanagawa, JP;

Assignee:

Sony Corporation, Tokyo, JP;

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
G03H 1/02 (2006.01);
U.S. Cl.
CPC ...
Abstract

Disclosed herein is a recording and reproducing device including: a light source; an intensity modulating section; a polarization beam splitter; a selective polarization direction controlling section; a linearly polarized light/circularly polarized light converting section; and a driving controlling section.


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Ito, Terumasa. (2012). Recording and reproducing device and polarization direction controlling method (U.S. Patent No. 8144379). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8144379

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