Sumitomo Bakelite Company Limited

Somalogic, Incorporated

Wd Media (singapore) Pte. Ltd.

Daisuke Masuda

Takayuki Matsumoto

Sumio Shibahara

Sohei Funaoka

Dominic Zichi

Iwao Okamoto

Kanehisa Yokoyama

Mitsutaka Matsumoto

Michael Patrick Coleman

Chiyo Saito

Junichi Horikawa

A main object of the invention is to provide a polymer compound for medicine which has an excellent capability of fixing a biologically active substance and has such chemical/physical stability that the compound is less dissolved or deteriorated in a washing step, in particular, which can be suitably applied to a plastic substrate surface. The invention provides a polymer compound for medical material which is a polymer comprising repeating units derived from an ethylenically unsaturated polymerizable monomer (a) having a functional group for fixing a biologically active substance, wherein the polymer has a reactive functional group on at least one terminal side thereof, and a biochip substrate wherein a layer containing the polymer compound is formed on a substrate surface, thereby attaining the object.

Polymer compound for medical material, and biochip substrate using the polymer compound

An object of the present invention is to further improve a recording density in a magnetic disk apparatus using a shingle write system. In a magnetic disk apparatus including a magnetic disk, a recording head that writes information on the magnetic disk, and a controller that controls a writing operation of the recording head to the magnetic disk, the controller controls the writing operation such that the recording head writes information on a region including a target track and a portion of track adjacent thereto in an overlapping manner while position-shifting in a radial direction of the magnetic disk and a first writing frequency to a track on which information is last written is higher than a second writing frequency to another track.

Apparatus of single write magnetic disc

[Problem] A perpendicular magnetic recording medium and a magnetic disk device that are suitable for a shingle recording type are provided. [Solution] The perpendicular magnetic recording medium of the present invention is a perpendicular magnetic recording medium for a shingle recording type having a laminated film including a soft magnetic layerand a main recording layerformed on base, the soft magnetic layerhaving a thickness found from a core width of a magnetic head for recording and reproduction with respect to the perpendicular magnetic recording medium and a track pitch narrower than the core width.

Perpendicular magnetic recording media and magnetic disc apparatus

A biochip substrate capable of realizing the high detection accuracy by restricting a nonspecific adsorption or bonding of a substance to be detected, when used for a detection or analysis of protein, nucleic acids and the like. The biochip substrate is for fixing a biologically active substance on a surface of a solid substrate, and characterized in that it has a layer comprising a polymer compound obtained by copolymerizing an ethylenically unsaturated polymerizable monomer having an alkylene glycol residue, an ethylenically unsaturated polymerizable monomer having a functional group for fixing a biologically active substance and an ethylenically unsaturated polymerizable monomer having a cross-linkable functional group, on the surface of the substrate.

Polymer compound for biomedical use and biochip substrate using such a polymer compound

Growing community of inventors

Tokyo, Japan

Daisuke Masuda