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:
Apr. 21, 2015
Filed:
Aug. 17, 2012
Yuuma Usui, Kanagawa, JP;
Takeo Tsukamoto, Kanagawa, JP;
Aino Hasegawa, Kanagawa, JP;
Hideomi Sakuma, Kanagawa, JP;
Manabu Seo, Kanagawa, JP;
Hiroyuki Yamashita, Kanagawa, JP;
Ryota Suzuki, Tokyo, JP;
Hisayoshi Ohshima, Kanagawa, JP;
Takahiko Matsumoto, Kanagawa, JP;
Shigeo Takeuchi, Kanagawa, JP;
Takeshi Hihara, Kanagawa, JP;
Yuuma Usui, Kanagawa, JP;
Takeo Tsukamoto, Kanagawa, JP;
Aino Hasegawa, Kanagawa, JP;
Hideomi Sakuma, Kanagawa, JP;
Manabu Seo, Kanagawa, JP;
Hiroyuki Yamashita, Kanagawa, JP;
Ryota Suzuki, Tokyo, JP;
Hisayoshi Ohshima, Kanagawa, JP;
Takahiko Matsumoto, Kanagawa, JP;
Shigeo Takeuchi, Kanagawa, JP;
Takeshi Hihara, Kanagawa, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
Disclosed is an aqueous ink composition, including an aqueous solvent, a coloring agent dissolved or dispersed in the aqueous solvent, an ABA-type amphipathic polymer including a hydrophobic segment A and a hydrophilic segment B, and an anionic surfactant configured to dissolve or disperse the ABA-type amphipathic polymer in the aqueous solvent, wherein a viscosity of the aqueous ink composition is changed depending on a pH thereof.