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:
Mar. 19, 2002
Filed:
Jun. 22, 1999
Applicant:
Inventors:
Yoshihiro Omae, Kitakyushu, JP;
Nobutake Mise, Kitakyushu, JP;
Yutaka Fukuyama, Kitakyushu, JP;
Yuuichi Sekine, Kitakyushu, JP;
Takaharu Yamamoto, Kitakyushu, JP;
Hiroaki Takehara, Kitakyushu, JP;
Tsuyoshi Yamaguchi, Kitakyushu, JP;
Susumu Nakajima, Yokohama, JP;
Masanobu Ishida, Yokohama, JP;
Mamoru Nakayama, Yokkaichi, JP;
Hiroshi Maeda, Ibaraki, JP;
Assignee:
Mitsubishi Chemical Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C09C 1/50 ;
U.S. Cl.
CPC ...
C09C 1/50 ;
Abstract
A carbon black having an average particle size of at most 13 nm, D of at most 80 nm, a D /D ratio of at most 0.6 and at least pH 5.