Nok Corporation

Yutaka Kouda

Takao Kanno

Tomoko Minagawa

Yoshiyuki Takeishi

Yasushi Yamamoto

Takeshi Yamada

Tomohiro Inoue

Keiichi Miyajima

Hirokazu Nagato

Takahiro Ishizuka

Yasuki Karita

An electromagnetic wave shielding gasket comprising a gasket body integrated with an electroconductive non-woven fabric or woven fabric, a seal part being provided, while avoiding the area of the electroconductive non-woven fabric or woven fabric, where the gasket body, preferably a gasket body with a lip-shaped projection, is integrated at the edge with the electroconductive non-woven fabric or woven fabric, and particularly preferably an annular gasket body with a lip-shaped projection is integrated at the inner peripheral edge with the outer peripheral edge of the annular body of the electroconductive non-woven fabric or woven fabric.

Electromagnetic wave shielding gasket

A fluorine-based magnetic fluid, which comprises (A) fine magnetic particles as dispersed in (D) a perfluoropolyether base oil represented by the following general formula:

Fluorine-based magnetic fluid

A fluorine-based magnetic fluid, which comprises (A) fine magnetic particles dispersed in (D) a perfluoropolyether base oil represented by the following general formula:

A magnetic fluid is produced by adding a solution of N-polyalkylenepolyamine-substituted alkenylsuccinimide in a hydrocarbon solvent to an aqueous suspension of fine particles of ferrites, thereby adsorbing the N-polyalkylenepolyamine-substituted alkenylsuccinimide onto the fine particles of ferrites, distilling off water and the hydrocarbon solvent therefrom, and dispersing the fine particles of N-polyalkylenepolyamine-substituted alkenylsuccinimide-adsorbed magnetites as residues into a base oil of low vapor pressure having a vapor pressure of not more than 0.1 mmHg at 25.degree. C.

Growing community of inventors

Tsukuba, Japan

Yutaka Kouda