Patents by Inventor Norihito Otsuki
Norihito Otsuki 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: 7758656Abstract: A textile having excellent water- and oil-repellency can be obtained by a method of preparing a treated textile, having steps of: (1) preparing a treatment liquid comprising a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, preferably at most 3, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent is at least one fluorine-containing compound selected from the group consisting of a fluorine-containing polymer and a fluorine-containing low molecular weight compound, and the water- and oil-repellent agent or the treatment liquid contains an organic salt.Type: GrantFiled: April 16, 2001Date of Patent: July 20, 2010Assignee: Daikin Industries, Ltd.Inventors: Takashi Enomoto, Ikuo Yamamoto, Norihito Otsuki, Teruyuki Fukuda, Kayo Kusumi
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Patent number: 6939580Abstract: A textile having durability of maintaining water- and sufficient oil-repellency and soil releasability before and after cleaning can be obtained by a method of preparing a treated textile, having steps of: (1) preparing a treatment liquid containing a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, preferably at most 3, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent is an emulsion containing a fluorine-containing compound and an emulsifier, the fluorine-containing compound is a fluorine-containing polymer and/or a fluorine-containing low molecular weight compound, and the emulsifier contains an anionic surface active agent having pKa of at least 2.Type: GrantFiled: March 29, 2001Date of Patent: September 6, 2005Assignee: Daikin Industries, Ltd.Inventors: Takashi Enomoto, Ikuo Yamamoto, Norihito Otsuki, Teruyuki Fukuda
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Patent number: 6838139Abstract: It is possible to provide the heat resistant material and coating material for OA equipment which comprise a fluorine-containing multi-segment polymer having heat resistance, abrasion resistance, non-sticking property against toner and oil resistance in addition to flexibility and are used particularly on surfaces of fuser roll and belt. Those materials comprise a fluorine-containing multi-segment polymer having an elastomeric fluorine-containing polymer chain segment A and a non-elastomeric fluorine-containing polymer chain segment B, and the elastomeric fluorine-containing polymer chain segment A comprises not less than 90% by mole of perhaloolefin unit as a recurring unit and imparts flexibility to the whole polymer.Type: GrantFiled: September 12, 2002Date of Patent: January 4, 2005Assignee: Daikin Industries, Ltd.Inventors: Takayuki Araki, Yoshito Tanaka, Masahiro Kumegawa, Norihito Otsuki, Masami Kato, Tetsuo Shimizu
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Publication number: 20030161953Abstract: A textile having durability of maintaining water- and sufficient oil-repellency and soil releasability before and after cleaning can be obtained by a method of preparing a treated textile, having steps of: (1) preparing a treatment liquid containing a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, preferably at most 3, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent is an emulsion containing a fluorine-containing compound and an emulsifier, the fluorine-containing compound is a fluorine-containing polymer and/or a fluorine-containing low molecular weight compound, and the emulsifier contains an anionic surface active agent having pKa of at least 2.Type: ApplicationFiled: September 27, 2002Publication date: August 28, 2003Inventors: Takashi Enomoto, Ikuo Yamamoto, Norihito Otsuki, Teruyuki Fukuda
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Publication number: 20030130432Abstract: It is possible to provide the heat resistant material and coating material for OA equipments which comprise a fluorine-containing multi-segment polymer having heat resistance, abrasion resistance, non-sticking property against toner and oil resistance in addition to flexibility and are used particularly on surfaces of fuser roll and belt. Those materials comprise a fluorine-containing multi-segment polymer having an elastomeric fluorine-containing polymer chain segment A and a non-elastomeric fluorine-containing polymer chain segment B, and the elastomeric fluorine-containing polymer chain segment A comprises not less than 90% by mole of perhaloolefin unit as a recurring unit and imparts flexibility to the whole polymer.Type: ApplicationFiled: September 12, 2002Publication date: July 10, 2003Applicant: DAIKIN INDUSTRIES, LTD.Inventors: Takayuki Araki, Yoshito Tanaka, Masahiro Kumegawa, Norihito Otsuki, Masami Kato, Tetsuo Shimizu
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Publication number: 20030115678Abstract: A textile having excellent water- and oil-repellency can be obtained by a method of preparing a treated textile, having steps of: (1) preparing a treatment liquid comprising a water- and oil-repellent agent, (2) adjusting pH of the treatment liquid to at most 7, preferably at most 3, (3) applying the treatment liquid to a textile, (4) treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent is at least one fluorine-containing compound selected from the group consisting of a fluorine-containing polymer and a fluorine-containing low molecular weight compound, and the water- and oil-repellent agent or the treatment liquid contains an organic salt.Type: ApplicationFiled: October 18, 2002Publication date: June 26, 2003Inventors: Takashi Enomoto, Ikuo Yamamoto, Norihito Otsuki, Teruyuki Fukuda, Kayo Kusumi
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Publication number: 20030106161Abstract: A textile having sufficient water repellency, oil repellency and soil releasability before and after cleaning can be prepared by a method of preparing a treated textile has the steps of (1) preparing a treatment liquid containing a water- and oil-repellent agent and a stain blocking agent, (2) bringing the pH of the treatment liquid to at most 7, (3) applying the treatment liquid to the textile, (4) thermally treating the textile with steam, and (5) washing the textile with water and dehydrating the textile, wherein the water- and oil-repellent agent has a combination of (A) a fluorine-containing polymer comprising a repeat unit derived from vinyl chloride and/or vinylidene chloride, and (B) a fluorine-containing polymer free from a repeat unit derived from vinyl chloride and/or vinylidene chloride.Type: ApplicationFiled: July 24, 2002Publication date: June 12, 2003Inventors: Takashi Enomoto, Ikuo Yamamoto, Teruyuki Fukuda, Norihito Otsuki
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Patent number: 6476151Abstract: It is possible to provide the heat resistant material and coating material for OA equipments which comprise a fluorine-containing multi-segment polymer having heat resistance, abrasion resistance, non-sticking property against toner and oil resistance in addition to flexibility and are used particularly on surfaces of fuser roll and belt. Those materials comprise a fluorine-containing multi-segment polymer having an elastomeric fluorine-containing polymer chain segment A and a non-elastomeric fluorine-containing polymer chain segment B, and the elastomeric fluorine-containing polymer chain segment A comprises not less than 90% by mole of perhaloolefin unit as a recurring unit and imparts flexibility to the whole polymer.Type: GrantFiled: August 11, 2000Date of Patent: November 5, 2002Assignee: Daikin Industries, Ltd.Inventors: Takayuki Araki, Yoshito Tanaka, Masahiro Kumegawa, Norihito Otsuki, Masami Kato, Tetsuo Shimizu
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Patent number: 6383620Abstract: An antiglare-treated article comprising an acrylic resin substrate and a fluorine-containing polymer coating formed on the surface of the substrate, wherein the thickness of the coating is in the range between 0.03 and 0.5 &mgr;m, and the fluorine-containing polymer has a refractive index in the range between 1.30 and 1.40 and comprises a block which is compatible with the acrylic resin and a block comprising a fluorine-containing elastomer. This treated article can be stably produced at low costs although it has the same abrasion resistance and antiglare effects as those of conventional antiglare-treated articles, or it has better antiglare effects than conventional antiglare films while maintaining abrasion resistance.Type: GrantFiled: March 15, 1999Date of Patent: May 7, 2002Assignee: Daikin Industries, Ltd.Inventors: Takahisa Aoyama, Tetsuo Shimizu, Norihito Otsuki, Norio Nagahama
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Patent number: 6355753Abstract: A stainproofing polymer having: (i) a reactive group selected from the group consisting of a carboxyl group or its salt, a hydroxyl group, an epoxy group, a phosphoric acid group, an alkoxysilane group, an imine group, a sulfonic acid group, an amino group, an isocyanate group and a blocked isocyanate group; and (ii) a fluoroalkyl group, characterized in that a melting point of a monomer having a fluoroalkyl group, which constitutes the polymer, is at least 70° C. and a melting point of the stainproofing polymer is at least 50° C., gives durability capable of maintaining sufficient water- and oil-repellency after cleaning.Type: GrantFiled: January 19, 2000Date of Patent: March 12, 2002Assignee: Daikin Industries Ltd.Inventors: Masayuki Yamana, Ikuo Yamamoto, Norihito Otsuki, Teruyuki Fukuda
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Patent number: 6284853Abstract: The present invention provides a copolymer whose durability on cleaning is improved while maintaining good water- and oil-repellency. Disclosed is a copolymer having: (i) a fluoroalkyl group, (ii) a urethane or urea linkage, and (iii) a functional group selected from the group consisting of a carboxyl group, a carboxylic anhydride group, an epoxy group, a phosphoric group, an alkoxysilane group, a imine group, a sulfonic group, an amino group, an isocyanate group and a chlorine atom, and a stainproof agent containing the copolymer as an active component.Type: GrantFiled: January 29, 1998Date of Patent: September 4, 2001Assignee: Daikin Industries, Ltd.Inventors: Masayuki Yamana, Ikuo Yamamoto, Norihito Otsuki, Teruyuki Fukuda
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Patent number: RE41110Abstract: It is possible to provide the heat resistant material and coating material for OA equipment which comprise a fluorine-containing multi-segment polymer having heat resistance, abrasion resistance, non-sticking property against toner and oil resistance in addition to flexibility and are used particularly on surfaces of fuser roll and belt. Those materials comprise a fluorine-containing multi-segment polymer having an elastomeric fluorine-containing polymer chain segment A and a non-elastomeric fluorine-containing polymer chain segment B, and the elastomeric fluorine-containing polymer chain segment A comprises not less than 90% by mole of perhaloolefin unit as a recurring unit and imparts flexibility to the whole polymer.Type: GrantFiled: August 30, 2006Date of Patent: February 9, 2010Assignee: Daikin Industries, Ltd.Inventors: Takayuki Araki, Yoshito Tanaka, Masahiro Kumegawa, Norihito Otsuki, Masami Kato, Tetsuo Shimizu