Patents by Inventor Yoshikazu Arimatsu
Yoshikazu Arimatsu 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).
-
Patent number: 6015398Abstract: A needle which has decreased piercing resistance, which resistance does not increase by repeated piercing and of which a sterilizing means is not limited, is provided by the present invention. The needle is coated on its outside surface with a mixture of (1) a polyorganosiloxane having amino groups at both terminal ends reacted with an alkoxysilane having epoxy groups and (2) a non-reactive polyorganosiloxane which has a lower average degree of polymerization of its siloxane part than that of polyorganosiloxane (1).Type: GrantFiled: May 12, 1998Date of Patent: January 18, 2000Assignee: Nissho CorporationInventors: Yoshikazu Arimatsu, Takeshi Nizuka
-
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
-
Patent number: 5512059Abstract: A dyed union knit fabric comprised of at least a polyurethane elastic fiber containing a chlorine-induced degradation inhibitor in a proportion of 0.5-4.5 weight % relative to the weight of the fiber, and a polyamide fiber and/or a cation dyeable polyester fiber, which has been dyed with mixed dyes of acid dyes, dispersion dyes, metal-complex dyes, reactive dyes and direct dyes, and markedly improved in resistance to chlorine-induced change in shade by allowing to contain at least one compound having a reaction amount of chlorine of 50 milliequivalent per gram or more, specifically one member of mono- and/or polyhydroxybenzene derivatives in a proportion of 0.1-20% relative to the weight of the fiber; and a method for manufacturing same. According to the present invention, excellent resistance to chlorine-induced change in shade as well as chlorine-induced degradation can be afforded to the dyed union knit fabric.Type: GrantFiled: October 14, 1994Date of Patent: April 30, 1996Assignee: Toyo Boseki Kabushiki KaishaInventors: Yoshinori Ido, Shuji Chiba, Yoshikazu Arimatsu, Hajime Suzuki, Takehiko Shimizu
-
Patent number: 5456960Abstract: A dyed union knit fabric comprised of at least a polyurethane elastic fiber containing a chlorine-induced degradation inhibitor in a proportion of 0.5-4.5 weight % relative to the weight of the fiber, and a polyamide fiber and/or a cation dyeable polyester fiber, which has been dyed with mixed dyes of acid dyes, dispersion dyes, metal-complex dyes, reactive dyes and direct dyes, and markedly improved in resistance to chlorine-induced change in shade by allowing to contain at least one compound having a reaction amount of chlorine of 50 milliequivalent per gram or more, specifically one member of mono- and/or polyhydroxybenzene derivatives in a proportion of 0.1-20 % relative to the weight of the fiber; and a method for manufacturing same. According to the present invention, excellent resistance to chlorine-induced change in shade as well as chlorine-induced degradation can be afforded to the dyed union knit fabric.Type: GrantFiled: March 21, 1994Date of Patent: October 10, 1995Assignee: Toyo Boseki Kabushihi KaishaInventors: Yoshinori Ido, Shuji Chiba, Yoshikazu Arimatsu, Hajime Suzuki, Takehiko Shimizu
-
Patent number: 5214120Abstract: A dope for forming elastic polyurethane articles is prepared by using a polyol, a diisocyanate and a diamine. A solvent and a terminating agent comprising a secondary monoamine and a ketoimineamine and/or an aldoimine-amine may also be employed.Type: GrantFiled: March 2, 1992Date of Patent: May 25, 1993Assignee: Toyo Boseki Kabushiki KaishaInventors: Youichi Watanabe, Yoshikazu Arimatsu, Hajime Suzuki
-
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
-
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
-
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
-
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
-
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