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:
Aug. 04, 2026
Filed:
Mar. 14, 2023
Applicants:
Hiroyuki Naito, Tokyo, JP;
Yuki Shingai, Kanagawa, JP;
Noriaki Okada, Kanagawa, JP;
Inventors:
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09D 4/06 (2006.01); A61C 13/00 (2006.01); A61C 13/08 (2006.01); B33Y 10/00 (2015.01); B33Y 30/00 (2015.01); B33Y 70/00 (2020.01); C09D 7/40 (2018.01); C09D 7/62 (2018.01); C09D 135/02 (2006.01); C09D 175/14 (2006.01);
U.S. Cl.
CPC ...
C09D 4/06 (2013.01); A61C 13/0013 (2013.01); A61C 13/08 (2013.01); B33Y 70/00 (2014.12); C09D 7/62 (2018.01); C09D 7/67 (2018.01); C09D 7/68 (2018.01); C09D 135/02 (2013.01); C09D 175/14 (2013.01); B33Y 10/00 (2014.12); B33Y 30/00 (2014.12);
Abstract
A curable composition containing a radical-polymerizable monomer and a hard solid component having a volume average particle diameter of 10 nm or greater and 1,000 nm or less is provided. The content of the hard solid component is 3% by volume or greater and 40% by volume or less. The difference (n−n) between the refractive index (n) of a cured product of any other component than the hard solid component and the refractive index (n) of the hard solid component is 0.04 or greater.