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:
Nov. 27, 2001
Filed:
Jun. 17, 1999
Applicant:
Inventors:
Hiroshi Sasaki, Ibaraki-ken, JP;
Mitsuyoshi Shouji, Ibaraki-ken, JP;
Takayuki Nakakawaji, Kitaibaraki, JP;
Tomoe Takamura, Hitachi, JP;
Mina Ishida, Hitachi, JP;
Yutaka Ito, Takahagi, JP;
Hiroyuki Matsumoto, Chigasaki, JP;
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C10L / ; C10M / ; C10M / ; C07C 4/312 ; C07D / ;
U.S. Cl.
CPC ...
C10L / ; C10M / ; C10M / ; C07C 4/312 ; C07D / ;
Abstract
The present invention is a fluorine-containing compound having i) a perfluoropolyoxyalkyl or -alkylene chain having an average molecular weight of 800 or more and ii) a cyclic or non-cyclic polyether atomic group. Its use as a low-scattering lubricant or surface modifier (water repellent) brings about an improvement in sliding durability of magnetic recording media.