Hitachi, Ltd.

Agency of Industrial Science and Technology

Ministry of International Trade & Industry

Teruaki Kobayashi

Daizo Tokinaga

Kazumichi Imai

Kenji Yasuda

Yoshiki Kato

Keiichi Nagai

Heigo Ishihara

Hajime Fukke

Munehisa Mitsuya

Waichi Nagashiro

Katsuyoshi Chiba

Teruo Tsunoda

Satoshi Takahashi

Yoichi Oba

Yoshiharu Karasawa

Kazuo Yasuda

Michio Itoh

Mitsushi Endo

Daizo Tokinage

Mitsuyoshi Yuasa

Akiko Katori

Determination of a plurality of species of antibodies or antigens is attained by a method which comprises forming a plurality of different kinds of reaction membranes each having a different species of antibody or antigen on an electrophoretic carrier, superposing these reaction membranes, optionally superposing a filter on the laminate of reaction membranes, inserting the laminate in an electrolyte, adding a plurality of different species of antigens or antibodies corresponding to the plurality of species of antibodies or antigens supported in the aforementioned reaction membranes, electrophoretically moving the added antigens or antibodies through the electrolyte and enabling them to react with the antibodies or antigens supported on the reaction membranes, and measuring the concentrations of either the antigens or antibodies resulting from the reaction or the antibodies or antigens supported in an unreacted form on the reaction membranes.

Electrophoretic antigen-antibody determination with laminate of multiple

Immunoassay for measuring the concentration of antigen in a sample

An immunoassay method for measuring a concentration of an antigen for a short period of time by immobilizing an antibody over the whole zone of an effective supporting matrix for electrophoresis and fixing an antigen in a sample to be measured by electrophoresis for the antigen-antibody reaction between said immobilized antibody and said antigen.

Immunoassay method

Urea electrode comprises a urease-immobilized membrane having added amino groups prepared by dipping an immobilized membrane in an aqueous solution of ethylenediamine or polylysine and an electrode for quantitative determination of ammonium ions. The electrode has a shorter measurement time with a larger electrode output.

Urease-immobilized urea electrode and process for preparing the same

A nephelometric immunoassay and a nephelometer therefore, characterized in that light is projected on a sample to-be-measured containing an antigen-antibody complex, that at least two light scattering intensities at different angles with respect to the incident light are measured, and that a true antigen concentration is discriminated by comparing the light scattering intensities.

Nephelometric immunoassay and nephelometer

A method of manufacturing a paint composite for magnetic films wherein a mixture consisting of a magnetic powder, a polymer such as polyvinylbutyral, and a solvent is ground under a shear stress of 10-400 kg/cm.sup.2, and the ground mixture has a solvent, an epoxy resin and a phenol resin added thereto and is further ground. When a magnetic disk is produced using a paint which has been obtained by executing the first grinding under a shear stress of 10-400 kg/cm.sup.2 with a kneader or the like, it is endowed with excellent electric characteristics and surface flatness.

Method of manufacturing a paint composite for magnetic films

A process for the preparation of a magnetic recording medium comprising;

Process for the preparation of magnetic recording medium

Growing community of inventors

Hachioji, Japan

Teruaki Kobayashi