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:
May. 20, 2014
Filed:
Jun. 23, 2011
Applicants:
Masahiro Yanagisawa, Okayama, JP;
Seigou Kawaguchi, Yonezawa, JP;
Inventors:
Masahiro Yanagisawa, Okayama, JP;
Seigou Kawaguchi, Yonezawa, JP;
Assignee:
Ricoh Company, Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
C08F 2/00 (2006.01); C08F 18/02 (2006.01); C08F 18/04 (2006.01); C08F 232/06 (2006.01); C08F 212/32 (2006.01); C08F 283/12 (2006.01); C08F 218/02 (2006.01);
U.S. Cl.
CPC ...
C08F 2/00 (2013.01); C08F 212/32 (2013.01); C08F 283/128 (2013.01); C08F 218/02 (2013.01);
Abstract
An object of the present invention is to provide white colored fine particles with high white reflectance and not easily precipitating in a dispersion medium compared to inorganic white pigments, a method of producing the fine particles, an image display medium and an image display apparatus having a high whiteness like a paper and an excellent display memorability using the fine particles. Therefore, the fine particles contain a polymer of a compound expressed by the following formula (1):