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:
Oct. 30, 2012
Filed:
Feb. 04, 2008
Takehiro Shimizu, Kitakyushu, JP;
Kazuyoshi Masaki, Kitakyushu, JP;
Hidetaka Fujimatsu, Kitakyushu, JP;
Takehiro Shimizu, Kitakyushu, JP;
Kazuyoshi Masaki, Kitakyushu, JP;
Hidetaka Fujimatsu, Kitakyushu, JP;
Nippon Steel Chemical Co., Ltd., Tokyo, JP;
Abstract
Disclosed is a volume phase hologram recording material of high sensitivity, high contrast, and excellent record retention properties and also disclosed is a volume phase hologram recording medium using the said material. The volume phase hologram recording material mainly contains a three-dimensional crosslinked polymer matrix, a radically polymerizable monomer, and a photoradical polymerization initiator. The three-dimensional crosslinked polymer matrix is formed from a matrix-forming compound having two photoradically polymerizable unsaturated groups and two non-photoradically polymerizable hydroxyl groups represented by the following general formula (1) and another matrix-forming compound having no photoradically polymerizable group.