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Zenji Hagiwara, Hideo Ohki, Shigetaka Hoshino, Saburo Nohara, Shunya Ida, Kenichi Tagawa: Particle-packed fiber article having antibacterial property. Kanebo, Kanto Chemical Co, Cushman Darby & Cushman, June 25, 1985: US04525410 (150 worldwide citation)

Specific zeolite particles retaining therein a metal ion having a bactericidal activity are packed and retained in a mixed fiber assembly composed of low-melting thermoplastic synthetic fibers and ordinary fibers. The zeolite particles are retained by welding of the low-temperature thermoplastic syn ...


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Zenji Hagiwara, Shigetaka Hoshino, Hiroo Ishino, Saburo Nohara, Kenichi Tagawa, Keio Yamanaka: Polymer article having an antibacterial property containing zeolite particles therein and the processes for producing same. Kanebo Kanto Chemical Co, Nixon & Vanderhye P C, October 4, 1988: US04775585 (115 worldwide citation)

A polymer article containing zeolite particles on which metal ion having a bactericidal property, e.g. Ag, Cu or Zn, is provided by an ion exchange reaction shows an excellent bactericidal effect and durability of the effect, but no deterioration of physical properties of the polymer.


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Zenji Hagiwara, Shigetaka Hoshino, Hiroo Ishino, Saburo Nohara, Kenichi Tagawa, Keio Yamanaka: Zeolite particles having bacteriocidal properties. Kanebo, Zenji Hagiwara, Nixon & Vanderhye, March 27, 1990: US04911899 (94 worldwide citation)

Zeolite particles retaining at least one metal ion having bacteriostatic properties on their ion-exchangeable sites in an amount up to 41% of the zeolite's ion exchange capacity are described.


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Zenji Hagiwara, Shigetaka Hoshino, Hiroo Ishino, Saburo Nohara, Kenichi Tagawa, Keio Yamanaka: Zeolite particles retaining silver ions having antibacterial properties. Kanebo, Zenji Hagiwara, Nixon & Vanderhye, March 27, 1990: US04911898 (81 worldwide citation)

Zeolite particles retaining silver ions having bacteriostatic properties on their ion-exchangeable sites in an amount up to 41% of the zeolite's exchange capacity are described.


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Kenichi Tagawa: Clutch release bearing device. Nippon Seiko Kabushiki Kaisha, Shapiro and Shapiro, October 17, 1989: US04874073 (20 worldwide citation)

A clutch release bearing device including a clutch release bearing abutted to a diaphragm spring of a clutch of a vehicle, and a holding arrangement for holding the bearing in a predetermined condition. The holding arrangement includes a sleeve of synthetic resin, a metal anvil extended radially out ...


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Kenichi Tagawa, Takao Iguchi: Bearing cages for supporting and retaining roller elements in cylindrical roller bearings. Nippon Seiko Kabushiki Kaisha, Basile Weintraub & Hanlon, March 6, 1984: US04435024 (9 worldwide citation)

A cage consists of a pressed annular metal cage member (6) and one or two molded plastic roller retaining member(s) (10). Each roller retaining member (10) includes a cylindrical part having pockets for receiving a bearing roller (3) and an annular flange or flanges (8) formed either on only one axi ...


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Koin Asano, Kenichi Tagawa, Hiroshi Nakagawa, Hiroyuki Wakahara: Leather-like material having excellent water vapor permeability and suppleness and its manufacture. Kanebo, Flynn Thiel Boutell & Tanis, September 29, 1992: US05151240 (4 worldwide citation)

A leather-like material having a soft feed and a high water vapor permeability comprises a substrate of a fiber aggregate and a microporous grain layer mainly comprising a polyurethane elastomer and having an average thickness between 20 .mu.m and 300 .mu.m, preferably between 20 .mu.m and 200 .mu.m ...


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Ryusuke Naitou, Amane Mochizuki, Kazunori Mune, Kenichi Tagawa: Process for producing optical waveguide. Nitto Denko Corporation, Sughrue Mion PLLC, June 26, 2007: US07236675 (1 worldwide citation)

The invention provides a process for producing an optical waveguide, which comprises the steps of: forming a substrate adhesion layer on a surface of a substrate from a layer-forming material containing a coupling agent; forming an undercladding layer on the substrate adhesion layer; and forming a c ...