Patents by Inventor Junji Mukai
Junji Mukai has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20230068344Abstract: Provided is a stand for a device that is capable of suppressing interference between a plurality of arms that are rotatably coupled and a device attached to an arm. The stand for a device includes a supporter that includes a first fulcrum; a first arm that is coupled to the supporter so as to be rotatable around the first fulcrum, and that includes a second fulcrum on one end; a second arm that includes a first end and a second end, the first end being coupled to the first arm so as to be rotatable around the second fulcrum; a grip; and a joint that is coupled to the second end of the second arm and the grip, is couplable to a device, and for which an orientation of the device with respect to the second arm is changeable by an operation of the grip.Type: ApplicationFiled: August 10, 2022Publication date: March 2, 2023Applicant: CASIO COMPUTER CO., LTD.Inventors: Junji MUKAI, Jumpei ISHIBASHI
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Publication number: 20230064659Abstract: Provided is a stand for a device that is capable of storing, in a stable state, a plurality of arms that are rotatably coupled. The stand for a device includes a supporter including a first fulcrum, a first arm that is coupled to the supporter so as to be rotatable around the first fulcrum and that includes a second fulcrum on one end, and a second arm that includes a first end and a device-side second end, the first end being coupled to the first arm so as to be rotatable around the second fulcrum. In a case where the first arm and the second arm are positioned at stored positions, the second fulcrum is positioned below the first fulcrum and, also, the second arm is tilted with respect to the vertical direction toward the first arm side.Type: ApplicationFiled: August 10, 2022Publication date: March 2, 2023Applicant: CASIO COMPUTER CO., LTD.Inventors: Junji MUKAI, Jumpei ISHIBASHI
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Patent number: 4946242Abstract: An optical part for light transmission comprises a light conductor formed of a core of a transparent material and a clad of a material having a smaller refractive index than that of the core material, and a light emitting and/or receiving element, wherein the light emitting and/or receiving element is integrally combined with the core of the light conductor by a same material as the core material or by a material having a same refractive index as that of the core material and having a greater rigidity than that of the material forming the clad and/or jacket. The optical part can be used in a high temperature environment as well as a room temperature environment without involving any appreciable loss in light transmission.Type: GrantFiled: August 22, 1988Date of Patent: August 7, 1990Assignees: Hitachi, Ltd., Hitachi Cable, Ltd.Inventors: Seikichi Tanno, Noriaki Taketani, Shuji Eguchi, Hideki Asano, Yukio Shimazaki, Yuuetsu Takuma, Masahiko Ibamoto, Junji Mukai
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Patent number: 4873030Abstract: There is provided a resinous optical transmitting element in which a core, through which light is transmitted, is formed into a predetermined non-linear configuration, and a cladding lower in refractive index than the core is in close contact with the core. A method of manufacturing the optical transmitting element comprises the steps of polymerizing polymeric material forming the core, within a mold having a predetermined non-linear cavity, subsequently removing the mold, and forming the cladding about the core. The resinous optical transmitting element obtained by the method can be formed into a selected one of various configurations in compliance with the purpose. In addition, the resinous optical transmitting element is less in distortion, making it possible to reduce the transmission loss.Type: GrantFiled: July 1, 1988Date of Patent: October 10, 1989Assignees: Hitachi, Ltd., Hitachi Cable, Ltd.Inventors: Noriaki Taketani, Hideki Asano, Akira Endo, Tomiya Abe, Masahiko Ibamoto, Junji Mukai, Seikichi Tanno, Shuji Eguchi, Masato Shimura
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Patent number: 4752641Abstract: A thermosetting resin composition comprising (a) a polyfunctional maleimide, (b) at least one member selected from the group consisting of alkenylphenols and alkenylphenol ethers, and (c) an allyl ester of polyvalent carboxylic acid, or cyanuric or isocyanuric acid and a prepolymer obtained by preliminarily heating the thermosetting resin composition can be used as a solventless type varnish for impregnating, e.g. electric windings, or for preparing a prepreg, and can give a cured product with heating at 120.degree.-250.degree. C. having excellent heat resistance of class C (180.degree. C. or higher) and electrical insulating properties.Type: GrantFiled: April 24, 1987Date of Patent: June 21, 1988Assignee: Hitachi, Ltd.Inventors: Toru Koyama, Hiroko Ohayashi, Junichi Katagiri, Motoyo Wajima, Junji Mukai
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Patent number: 4494217Abstract: In a semiconductor memory device comprising semiconductor memory elements having such a degree of integration in memory circuits as to produce soft errors by incident .alpha.-rays derived from a packaging material and a package which packages the memory elements and is made from the packaging material, when an .alpha.-rays shielding layer made from a resinous material, which may contain one or more high-purity fillers, containing a total amount of 1 part per billion or less of uranium and thorium is interposed between the memory elements and the package, the generation of soft errors is reduced remarkably.Type: GrantFiled: January 5, 1981Date of Patent: January 15, 1985Assignees: Hitachi, Ltd., Hitachi Chemical Company, Ltd.Inventors: Hiroshi Suzuki, Goro Tanaka, Akio Nishikawa, Junji Mukai, Mikio Sato, Daisuke Makino, Yoshiaki Wakashima
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Patent number: 4448940Abstract: A thermosetting resin composition comprising (A) at least one polyfunctional epoxy compound and (B) at least one polyfunctional nitrile compound and a prepolymer thereof can give a cured product having excellent heat resistance and mechanical properties such as flexibility.Type: GrantFiled: October 26, 1982Date of Patent: May 15, 1984Assignee: Hitachi, Ltd.Inventors: Tohru Koyama, Motoyo Wajima, Junji Mukai
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Patent number: 4138372Abstract: A polymerizable, curable resin composition suitable for molding materials, prepreg, powdery paint materials or the like, which comprises a polyepoxide, a uretdione and a tetraphenyl borate-amine complex. This composition has long pot life and good curability by virtue of latent catalytic characteristics of the complex.Type: GrantFiled: January 19, 1976Date of Patent: February 6, 1979Assignee: Hitachi, Ltd.Inventors: Akio Nishikawa, Hitoshi Yokono, Ryuichi Simizu, Junji Mukai
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Patent number: 4100114Abstract: A rigid polyurethane foam composition characterized by containing 5 to 20% by weight of hollow-spherical Silas balloons having a particle size of 100 to 300 .mu.(based on the total weight of the polyol and isocyanate components of the polyurethane foam) and 0.2 to 2% by weight of an organosilane compound (based on the total weight of the polyol and isocyanate components of the polyurethane foam and said Silas balloons) in the rigid polyurethane foam.Type: GrantFiled: December 30, 1975Date of Patent: July 11, 1978Assignee: Hitachi, Ltd.Inventors: Reishi Naka, Toshikazu Narahara, Junji Mukai
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Patent number: 4100118Abstract: A novel thermosetting resin composition consisting essentially of (a) one equivalent of a polyfunctional epoxy compound containing 10 to 80% by weight of a polyglycidyl ester of a fatty acid, (b) 1.5 to 5 equivalents of a polyfunctional isocyanate compound and (c) 0.01 to 10% by weight of a curing catalyst based on the total weight of the polyfunctional epoxy compound and the polyfunctional isocyanate compound. A cured product having excellent thermal resistance and excellent thermal shock resistance which is suitable for the molding of a large apparatus can be obtained by heating said thermosetting resin composition.Type: GrantFiled: October 8, 1975Date of Patent: July 11, 1978Assignee: Hitachi, Ltd.Inventors: Shun-ichi Numata, Hitoshi Yokono, Junji Mukai
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Patent number: 4070416Abstract: A novel thermosetting resin can be obtained by mixing 1 equivalent or more of a polyfunctional isocyanate per 1 equivalent of a polyfunctional epoxide and then carrying out a polymerization reaction of the mixture in the presence of the catalyst which forms isocyanurate rings and oxazolidone rings so as to enable the mixture to form 2 or more isocyanurate rings directly connected with oxazolidone rings through an isocyanate residues.The resulting thermosetting resin has excellent electrical, chemical and impact resistances and excellent self-extinguishing properties. Said resin is used as an electric insulating material.Type: GrantFiled: August 18, 1975Date of Patent: January 24, 1978Assignee: Hitachi, Ltd.Inventors: Toshikazu Narahara, Katuo Sugawara, Yoshiharu Karasawa, Hitoshi Yokono, Junji Mukai, Tadashi Muroi
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Patent number: 4056579Abstract: A novel thermosetting resin composition consisting essentially of (a) an isocyanate group-terminated condensate obtained by reacting a polycarboxylic acid compound having at least one acid anhydride ring with a stoichiometrical excess of a polyfunctional isocyanate compound or said condensate containing the unreacted isocyanate compound, (b) a polyfunctional epoxy compound and (c) a catalyst which forms mainly isocyanurate rings and oxazolidone rings. A cured product having excellent thermal resistance and excellent high temperature strength can be obtained by heating said composition.Type: GrantFiled: September 15, 1975Date of Patent: November 1, 1977Assignee: Hitachi, Ltd.Inventors: Akio Nishikawa, Hitoshi Yokono, Shun-ichi Numata, Junji Mukai
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Patent number: 3984376Abstract: Thermosetting resin compositions are obtained by mixing a resinous addition product produced by reacting an isocyanate compound having a molecular weight of 100 to 2000 and containing at least two isocyanate groups in its molecule with an epoxyphenol compound represented by the formula, ##EQU1## wherein R is a bi- or more valent group containing phenyl, R.sub.1 is hydrogen, methyl or ethyl, m and n each are an integer of 1-8, and optionally an ordinary thermosetting epoxy resin, and 0.01 to 10 % by weight of a basic heterocycle forming catalyst based on the weight of said resinous addition product, said isocyanate compound and said epoxyphenol compound being blended so that said OH group may be present in an amount of 1/3 to 1 equivalent per equivalent of said isocyanate group and said epoxy group may be present in an amount of one-fifth to two-thirds equivalent per equivalent of said isocyanate group.Type: GrantFiled: June 25, 1974Date of Patent: October 5, 1976Assignee: Hitachi, Ltd.Inventors: Hitoshi Yokono, Shunichi Numata, Kazuo Goto, Masahiko Sakai, Toshikazu Narahara, Junji Mukai
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Patent number: 3960982Abstract: A thermosetting resin composition is derived from a modified novolak-type resin obtained by the reaction of a phenolic compound with an aralkyl halide or ether. The thermosetting resin is composed of 20 to 80 parts by weight of a thermosetting resin prepared by reacting a modified novolak-type resin represented by, for example, the general formula, ##SPC1##Wherein R is an aromatic nucleus, with formaldehyde in the presence of a basic catalyst, and, in admixture therewith, 80 to 20 parts by weight of a thermosetting resin prepared by reacting the above-mentioned modified novolak-type resin with hexamethylenetetramine. The thermosetting resin is quickly curable and gives a cured article excellent in heat resistance.Type: GrantFiled: June 18, 1974Date of Patent: June 1, 1976Assignees: Hitachi, Ltd., Hitachi Chemical Company, Ltd.Inventors: Shunichi Numata, Hitoshi Yokono, Junji Mukai, Tadashi Muroi, Mineo Nakano, Mikio Manabe