Bridgestone Tire Company Limited

Bridgestone Corporation

Pigeon Corporation

Hikaru Ishikawa

Yukio Fukuura

Itsuo Tanuma

Toshio Honda

Kazuo Naito

Masao Ogawa

Yasuhiro Morimura

Setsuo Akiyama

Shozo Kojima

Koji Takagi

Kunio Machida

Hiroyuki Anzai

Junji Sakata

Shuyou Akama

Shoji Tanaka

Yoshikatsu Suzuki

Takayuki Sugimura

Hiroyuki Kanesugi

Kazunori Ueno

Shozo Ojima

Tadashi Fuse

Mitsuo Iida

A conductive roller such as a developing roller, a charging roller or the like provided with a resin coating layer on a surface of an elastic layer, and more particularly to a conductive roller having the resin coating layer using an ultraviolet-curing type resin or an electron beam curing type resin and being obtained by contriving a structure of the resin coating layer, rendering the resin coating layer to contain microparticles, controlling the particle size of the microparticles, or forming the resin coating layer after the outer peripheral surface of the elastic layer is subjected to surface treatment.

Developing roller, charging roller, conductive roller and method for producing the same

A lip closing tool can be configured to encourage an infant or the like to close his/her mouth unconsciously and keep his/her mouth closed, thereby encouraging formation of a habit of nasal respiration. The lip closing tool can include a lip contact portion that is contacted by the outer surface of the lips during use, and a main body that is configured to be disposed inside the oral cavity during use. The main body can include a teeth contact portion that is disposed on the outer surface of the teeth during use and extends in a left-right direction. A thin lip contacting portion can connect the lip contact portion to the teeth contact portion and can be contacted by the upper and lower lips during use. The teeth contact portion can be formed entirely and integrally from a flexible material. Stimulation portions can be provided by enlarging the volume of the teeth contact portion near the end of right and left paths thereof.

Lip closing tool

A method is provided for manufacturing an optical plastic article formed of a plastic resin composition and having a homogeneous construction and a surface shape within a predetermined dimensional accuracy. A first step includes injection molding melted resin of the plastic resin composition into a mold cavity to produce a primary molding. A second step includes injection molding melted resin of the plastic resin composition which is the same as in the first step over at least a portion of the primary molding to form a secondary molding melt-welded to the primary molding and having the surface shape within the predetermined dimensional accuracy. The secondary molding has a secondary molding maximum thickness less than a limit thickness at which shrinkage exceeds limits of the predetermined dimensional accuracy. The optical plastic article has an optical plastic article thickness defined by the primary molding and the secondary molding greater than the limit thickness. The primary molding is preferably preheated prior to the secondary molding being melt-welded thereto and can have a thickness greater than the limit thickness.

Method of manufacturing optical-use plastic products

A vibration damping metal panel having an excellent post-workability is disclosed, which comprises two metal plates and an intermediate layer interposed therebetween and composed mainly of (A) at least one rubbery polymer having .alpha., .beta.-unsaturated carboxylate group in its molecule and (B) a substance selected from polymerizable monomers and mixtures thereof and thermosetting epoxy resins.

Vibration damping metal panels

Cross-linking type adhesive compositions comprising (A) polymers having .alpha.,.beta.-unsaturated carboxylate groups, (B) materials having polymerizable vinyl groups, which contain an acrylic and/or methacrylic acid, (C) thermoplastic resins and (D) catalysts of organic peroxides and/or photosensitizers. The adhesive compositions have good adhesive properties together with an excellent heat aging resistance, and can be applied for adhesion to organic and inorganic substrates.

Curable acrylic adhesives

A vibration damping metal panel having an excellent post-workability is disclosed, which comprises two metal plates and an intermediate layer interposed therebetween and composed mainly of (A) at least one rubbery polymer having .alpha.,.beta.-unsaturated carboxylate group in its molecule and (B) a substance selected from polymerizable monomers and mixtures thereof and thermosetting epoxy resins.

Anaerobic adhesive composition comprising modified unsaturated polymer

An unvulcanized rubber composition, whose rubber component consists of polybutadiene rubber as an essential component and at least one of styrene-butadiene rubber and a rubber of natural rubber and/or polyisoprene rubber, has a high adhesion to a vulcanized rubber composition, whose rubber component consists mainly of at least one rubber selected from natural rubber, polyisoprene rubber, polybutadiene rubber and styrene-butadiene rubber, and can be easily adhered to the vulcanized rubber composition through vulcanization without carrying out particular surface treatment of the vulcanized rubber composition.

Method of adhering unvulcanized rubber to vulcanized rubber through

A sandwich glass having an intermediate layer formed of a photosensitive resin consisting mainly of an acryloyloxy group- or methacryloyloxy group-containing high polymer and at least one of acrylic acid, methacrylic acid and acryloyloxy group- or methacryloyloxy group-containing compound is excellent in the adhesion between the intermediate layer and the glass plates and has high impact absorbing ability, light resistance and heat resistance.

Sandwich glass

A composite composed of vulcanized rubber and thermoplastic resin which adheres tightly to the rubber can be obtained by treating the surface of the vulcanized rubber with at least one of halogen, halogen generating compound and halogenoid, and bonding melted polyamide resin, polyester resin, styrene series resin or acrylic resin to the above treated rubber surface region by the injection or extrusion molding.

Method of bonding vulcanized rubber to resin

A vulcanized rubber composition containing at least 30% by weight, based on the amount of the rubber component, of syndiotactic-1,2-polybutadiene has a high adhesion, and can be easily and firmly adhered to another vulcanized rubber composition or to a porous material through a syndiotactic-1,2-polybutadiene thin film by a hot-melt adhesion process.

Hot-melt adhesion process for vulcanized rubber

An adhesive composition which shows improved stickiness and adhesive property at room temperature and exhibits an excellent adhering ability in a short time is prepared by compounding

Growing community of inventors

Kokubunji, Japan

Hikaru Ishikawa