Agency of Industrial Science and Technology

Ministry of International Trade & Industry

Sumitomo Electric Industries, Limited

Shin-etsu Chemical Co., Ltd.

Watanabe Pharmaceutical Industry Co., Ltd.

Keishiro Tsuda

Michihiko Asai

Yukio Shimura

Tsukasa Sakai

Susumu Ueno

Hirokazu Nomura

Koichi Okita

Kiyoshi Imada

Shigeru Asako

Akira Okada

Makoto Kodama

Kanji Sasaki

Satoshi Morimoto

Fumio Mizutani

Kazuaki Harata

Masakatsu Hato

Hiroshi Oinuma

Hideatsu Maeda

Tatsuo Katsura

Masaharu Komamiya

Keiji Iriyama

Masahiko Yoshiura

An antithrombogenic material is described, comprising an expanded polytetrafluoroethylene base having a collagen layer provided on the surface thereof, and further provided thereon a composite layer of collagen and a mucopolysaccharide, and said collagen is crosslinked with a crosslinking agent.

Antithrombogenic materials

A photosensor uses as a photosensitive part thereof a purple membrane film which contains bacteriorhodopsin isolated from a highly halophilic bacterium and which generates a photoelectromotive force corresponding to the intensity of light absorbed, and uses as an amplifying part an FET.

Photosensor having photosensitive part formed of purple membrane

The invention provides a very efficient method for the improvement of the antistatic performance, e.g. decrease in the accumulation of static electricity on the surface and decrease in the surface resistivity, of a synthetic resin shaped article with outstanding durability of the effect. The method comprises two steps in principle, first of which is the formation of a crosslinked layer in the surface portion of the shaped article by a variety of known methods effective for the formation of crosslinks in polymeric materials and the second of which is the exposure of the thus crosslinked surface of the article to low temperature plasma produced in an atmosphere containing a gaseous silicon-containing compound which may be a silane compound or a low-molecular weight vaporizable siloxane compound to form a plasma-polymerized surface film of the silicon compound on the crosslinked layer.

Method for the improvement of antistatic performance of synthetic resin

A fluorine resin membrane is made hydrophilic to a prescribed depth in the direction of thickness thereof to produce an asymmetrical membrane having a hydrophilic portion and a hydrophobic portion. An enzyme is immobilized in the hydrophilic portion of the membrane to obtain a membrane having a function of enzymatic reaction and a function of selective gas permeation. The hydrophilic portion is formed by causing a perfluoroalkyl surface active agent to penetrate the prescribed depth that is to be hydrophilic.

Enzyme immobilization in a fluorine resin membrane

An inclusion compound-containing composite comprises a container formed of a permeable membrane and an inclusion compound holding therein an active component and enclosed with the container. Through the membrane of the container, the composite releases the active component slowly and continuously over a long time.

Inclusion compound-containing composite

A solar battery is formed by forming a film of a specific merocyanine dye on an n-type semiconductor substrate thereby producing a p-n junction in the interface between the dye film and the semiconductor substrate and connecting electrodes one each to the two layers.

Solar battery

Shaped articles of polyvinyl chloride resins containing low-molecular plasticizers are irradiated with ultraviolet light of a wavelength in the vacuum ultraviolet region to cause the shaped articles to form therein a cross linked layer capable of preventing otherwise possible exudation of plasticizers to their surface.

Method for surface treatment of shaped articles of polyvinyl chloride

Growing community of inventors

Ibaraki, Japan

Keishiro Tsuda