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:
Sep. 12, 2017
Filed:
Mar. 30, 2015
Fujifilm Corporation, Minato-ku, Tokyo, JP;
Toshihide Aoshima, Minami-ashigara, JP;
Wataru Kikuchi, Minami-ashigara, JP;
Kazutoshi Katayama, Minami-ashigara, JP;
Tatsuo Mikami, Minami-ashigara, JP;
FUJIFILM Corporation, Minato-Ku, Tokyo, JP;
Abstract
An aspect of the present invention relates to a magnetic recording medium, which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein the magnetic layer further comprises a compound which has a weight average molecular weight of equal to or more than 1,000 but less than 20,000 and is denoted by formula (1): wherein, in formula (1), Adenotes a monovalent polymer group, each of Rand Rindependently denotes a single bond or a divalent connecting group, Rdenotes a hydrogen atom or a monovalent substituent, m denotes an integer of equal to or greater than 2, multiple instances of R, R, A, and Rthat are present can be identical or different, Adenotes a hydrogen atom or a monovalent substituent denoted by —OR—Z, Rdenotes a single bond or a divalent connecting group, Z denotes a monovalent acid group, among multiple instances of Athat are present, at least one denotes a monovalent group denoted by —O—R—Z, and X denotes a connecting group of valence m.