Patents by Inventor Hideyuki Mitamura
Hideyuki Mitamura 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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Patent number: 5939205Abstract: A gas barrier film comprising a polyamide film and an inorganic deposited layer laminated thereon, wherein the maximum shrinkage percentage after boiling treatment at 95.degree. C. for 30 minutes is not more than 3.5%. The gas barrier film of the present invention has excellent gas barrier property and water vapor-proof property even after boiling or retort treatment. Hence, the film of the present invention can serve well as a wrapping material for a wide range of objects that require high gas barrier property, such as food, medical products, industrial materials and the like, and has great industrial value.Type: GrantFiled: April 15, 1997Date of Patent: August 17, 1999Assignee: Toyo Boseki Kabushiki KaishaInventors: Seiichiro Yokoyama, Shigeru Komeda, Kiyoshi Iseki, Yozo Yamada, Chikao Morishige, Hideyuki Mitamura, Satoshi Osame, Shinji Fujita
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Patent number: 5583230Abstract: A novel mildew resistant polymerizable compound of the formula: ##STR1## wherein X is --0-- or --S--; and Y is a residue of a known mildew proofing compound, preferably, a residue of a compound selected from the group consisting of phenol substituted with 1 to 5 halogen atoms, p-chloro-m-cresol, o-phenylphenol, p-chloro-m-xylenol, salicylanilide, 8-hydroxyquinoline, 2-(4'-thiazolyl)benzimidazole, 2,5-dibromo-4-methylaniline, 1,2-benzoisothiazolin-3-one and 2-pyridinethiol-1-oxide. A polymer of the compound [I] and polyurethane composition containing the polymer are also disclosed.Type: GrantFiled: July 7, 1993Date of Patent: December 10, 1996Assignee: Toyo Boseki Kabushiki KaishaInventors: Hideyuki Mitamura, Yoshikazu Arimatsu
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Patent number: 5248468Abstract: Electrically conductive conjugate fibers having a diameter less than 50 fm. The fibers include a thermoplastic sheath and a low-melting metal core, with the core occupying 0.2 to 50% of the sectional area of the fiber. The sectional area of the core varies by less than 25% in the longitudinal direction, and the total length of the discontinuous portions of the core is 5 cm or less per meter. The fibers can be produced with a conjugate spinning nozzle. The low-melting metal is provided to the nozzle from a closed fusion tank located at a position below the spinning nozzle. The metal is supplied to the spinning nozzle by means of pressure from inert gas, which is supplied to an upper space of the fusion tank. The level of metal in the fusion tank is maintained substantially constant, and the pressure of the gas is controlled so as to maintain a pressure variation of 0.1 kg/cm.sup.2 or less.Type: GrantFiled: October 31, 1991Date of Patent: September 28, 1993Assignee: Toyo Boseki Kabushiki KaishaInventors: Hideyuki Mitamura, Fumikazu Yoshida, Tatsuo Shimura
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Patent number: 5173366Abstract: Electrically conductive conjugate fibers having a diameter less than 50.mu.m. The fibers include a thermoplastic sheath and a low-melting metal core, with the core occupying 0.2 to 50% of the sectional area of the fiber. The sectional area of the core varies by less than 25% in the longitudinal direction, and the total length of the discontinuous portions of the core is 5 cm or less per meter. The fibers can be produced with a conjugate spinning nozzle. The low-melting metal is provided to the nozzle from the closed fusion tank located at a position below the spinning nozzle. The metal is supplied to the spinning nozzle by means of pressure from inert gas, which is supplied to an upper space of the fusion tank. The level of metal in the fusion tank is maintained substantially constant, and the pressure of the gas is controlled so as to maintain a pressure variation of 0.1 kg/cm.sup.2 or less.Type: GrantFiled: November 8, 1991Date of Patent: December 22, 1992Assignee: Toyo Boseki Kabushiki KaishaInventors: Hideyuki Mitamura, Fumikazu Yoshida, Tatsuo Shimura
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Patent number: 4963310Abstract: A process for the production of polyester polyurethane elastomeric fibers having improved humid aging resistance which comprises the steps of reacting a polyester diol with an excess molar amount of an organic diisocyanate to prepare a urethane prepolymer having terminal isocyanate group at both ends thereof; extending the chain of the prepolymer with a bifunctional active hydrogen compound and 0.5 to 10.0 mole % of a diaminosilyl compound based on the total amount of the bifunctional active hydrogen compound during or after preparation of the prepolymer to obtain a polyurethane; spinning the polyurethane into fiber; and crosslinking the polyurethane during or after spinning.Type: GrantFiled: November 4, 1988Date of Patent: October 16, 1990Assignee: Toyo Boseki Kabushiki KaishaInventors: Hideyuki Mitamura, Yoshikazu Arimatsu, Katsuya Tani, Kenichi Katsuo
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Patent number: 4956431Abstract: A novel mildew resistant polymerizable compound of the formula: ##STR1## wherein X is --O-- or --S--; and Y is a residue of a known mildew proofing compound, preferably, a residue of a compound selected from the group consisting of phenol substituted with 1 to 5 halogen atoms, p-chloro-m-cresol, o-phenylphenol, p-chloro-m-xylenol, salicylanilide, 8-hydroxyquinoline, 2-(4'-thiazolyl)benzimidazole, 2,5-dibromo-4-methylaniline, 1,2-benzoisothiazolin-3-one and 2-pyridinethiol-1-oxide. A polymer of the compound [I] and a polyurethane composition containing the polymer are also disclosed.Type: GrantFiled: November 9, 1988Date of Patent: September 11, 1990Assignee: Toyo Boseki Kabushiki KaishaInventors: Hideyuki Mitamura, Yoshikazu Arimatsu
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Patent number: 4824929Abstract: A polymeric antioxidant which comprises a monomeric unit having a formula (I): ##STR1## wherein R.sub.1 is methyl or ethyl; and a monomeric unit having a formula (II): ##STR2## which imparts an excellent resistance against heat- or light-aging to a synthetic fiber and a resin.Type: GrantFiled: September 8, 1987Date of Patent: April 25, 1989Assignee: Toyo Boseki Kabushiki KaishaInventors: Yoshikazu Arimatsu, Katsuya Tani, Hideyuki Mitamura, Minoru Saito, Atsushi Kaji, Kenichi Katsuo
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Patent number: 4562239Abstract: A tertiary nitrogen atom-containing urethane polymer which comprises units of the following formulas (I) and (II) as the essential components and units of the following formulas (III), (IV) and (V) as the optional components, the content of the unit of the formula (I) being not less than 10 milliequivalents in terms of the tertiary nitrogen atom per kilogram of the urethane polymer, and has a molecular weight of not less than 500: ##STR1## wherein R.sub.1 and R.sub.2 are each a C.sub.1 -C.sub.4 alkyl group and, when taken together with the adjacent nitrogen atom to which they are attached, represent a nitrogen-containing heterocyclic group, R.sub.3 is a C.sub.1 -C.sub.4 alkyl group, R.sub.4 is an optionally branched C.sub.1 -C.sub.8 alkylene group, m is a positive integer and n is zero or a positive integer but m+n is a number which can provide the unit of the formula (I) with a molecular weight of 131 to 6998 and the bondings in the unit of the formula (I) may be in random and/or block, R.sub.Type: GrantFiled: August 6, 1984Date of Patent: December 31, 1985Assignee: Toyo Boseki Kabushiki KaishaInventors: Noriomi Yamane, Yoshikazu Arimatsu, Kenichi Katsuo, Minoru Saitoh, Katsya Tani, Hideyuki Mitamura, Kamatani Hiroyoshi
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Patent number: 4499221Abstract: A polyurethane composition improved in dyeing property which comprises (A) a polyurethane and (B) a tertiary nitrogen atom-containing polymer incorporated therein in an amount sufficient to stabilize the polyurethane (A), said polymer (B) being the reaction product between (C) a tertiary nitrogen atom-containing diol and an excessive amount of (D) an organic diisocyanate, the terminal isocyanate group in said reaction product being blocked with a monoamine and/or a dialkylhydrazine.Type: GrantFiled: May 31, 1984Date of Patent: February 12, 1985Assignee: Toyo Boseki Kabushiki KaishaInventors: Minoru Saitoh, Yoshikazu Arimatsu, Katsuya Tani, Hideyuki Mitamura
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Patent number: 4126652Abstract: A process for preparation of a metal carbide-containing molded product which comprises heating a molded composition comprising at least one powdery metal selected from the group consisting of B, Ti, Si, Zr, Hf, V, Nb, Ta, Mo, W, Cr, Fe and U and having an average particle size of not more than about 50 .mu. and an acrylonitrile polymer at a temperature of about 200.degree. to 400.degree. C and then calcining the resulting product at a temperature of about 900.degree. to 2500.degree. C in an inert atmosphere.Type: GrantFiled: February 25, 1977Date of Patent: November 21, 1978Assignee: Toyo Boseki Kabushiki KaishaInventors: Kunio Oohara, Tatsuhiko Shizuki, Hideyuki Mitamura, Masahiro Sugino