Patents by Inventor Kazutomo Takahashi
Kazutomo Takahashi 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: 20180051806Abstract: A combined oil ring in which carbon sludge and the like are not deposited between side rails and a spacer expander even if an internal combustion engine is operated for a long period of time. The combined oil ring includes an outer circumferential end portion of a space forming part and a continuous part that are closed and not open toward the outer circumferential side, thereby reducing carbon sludge deposits.Type: ApplicationFiled: March 31, 2016Publication date: February 22, 2018Applicant: NIPPON PISTON RING CO., LTDInventors: Yasuyuki MURATA, Kenji ARAI, Ryosuke KAMATA, Hideshi HITOSUGI, Kazutomo TAKAHASHI, Toru TSUKUI
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Patent number: 9528606Abstract: A combined oil ring that reduces deposits between side rails and a spacer expander there between. The spacer expander includes: upper pieces and lower pieces that are alternately arranged in a circumferential direction to be spaced apart in an axial direction and the circumferential direction; coupling pieces that respectively couple the adjacent upper and lower pieces; and ear parts that erect in an inner circumferential end portion of the upper and lower pieces and push the side rails. At least one of an upper surface of each upper piece and a lower surface of each lower piece has a groove formed thereon. Ear parts have a through-hole with which the groove is communicated and a distance along the axial direction between an upper or lower surface of each ear part at a top thereof and a deepest portion of the groove is at least 0.22 mm.Type: GrantFiled: August 28, 2013Date of Patent: December 27, 2016Assignee: NIPPON PISTON RING CO., LTDInventors: Hideshi Hitosugi, Kenji Arai, Kazutomo Takahashi
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Publication number: 20140062030Abstract: A combined oil ring that reduces deposits between side rails and a spacer expander there between. The spacer expander includes: upper pieces and lower pieces that are alternately arranged in a circumferential direction to be spaced apart in an axial direction and the circumferential direction; coupling pieces that respectively couple the adjacent upper and lower pieces; and ear parts that erect in an inner circumferential end portion of the upper and lower pieces and push the side rails. At least one of an upper surface of each upper piece and a lower surface of each lower piece has a groove formed thereon. Ear parts have a through-hole with which the groove is communicated and a distance along the axial direction between an upper or lower surface of each ear part at a top thereof and a deepest portion of the groove is at least 0.22 mm.Type: ApplicationFiled: August 28, 2013Publication date: March 6, 2014Applicant: NIPPON PISTON RING CO., LTDInventors: Hideshi HITOSUGI, Kenji ARAI, Kazutomo TAKAHASHI
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Patent number: 7044472Abstract: A combined steel oil control ring is provided which has steel side rails and a steel spacer expander. The spacer expander includes ear portions for contacting the side rails. The ear portions are substantially equally spaced with respect to each other along the internal circumferential portion of the spacer expander. The ear portions have radially external circumferential surfaces adapted to press the side rails radially outwardly by using the resilient force caused by the spacer expander. The spacer expander has up-and-down contours formed circumferentially along the radially external circumferential surface, for preventing the side rails from circumferentially rotating relatively to the spacer expander. The up-and-down contours each include at least two axially extending groove regions and at least three axially extending flat regions. The groove regions and flat regions are dimensioned to extend the life span of the contours and the dies.Type: GrantFiled: November 7, 2002Date of Patent: May 16, 2006Assignee: Nippon Piston Ring Co., Ltd.Inventors: Akira Takahashi, Kazutomo Takahashi
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Patent number: 6730711Abstract: A method for the production of a porous cross-linked polymer material by the polymerization of an HIPE containing a cross-linking agent, characterized by the fact at least one species of the cross-linking agent is a compound having a double bond equivalent f not less than 120 g/mol. The cross-linking agent is preferred to be a compound possessed of an alkylene oxide moiety or a vinyl polymer containing not less than two polymerizing double bonds in the molecular unit. Thus, it is made possible to produce a porous cross-linked polymer material excellent in absorbency and flexibility, permit the HIPE to be polymerized in a short time, and therefore improve the efficiency of production.Type: GrantFiled: June 13, 2002Date of Patent: May 4, 2004Assignees: Nippon Shokubai Co., Ltd., The Proctor & Gamble CompanyInventors: Masazumi Sasabe, Kenji Kadonaga, Hiroki Inoue, Akiko Mitsuhashi, Hirotama Fujimaru, Masatoshi Yoshida, Masuji Izubayashi, Kazutomo Takahashi
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Patent number: 6649665Abstract: In producing a porous cross-linked polymer by forming a water-in-oil type high internal phase emulsion and subsequently polymerizing the emulsion, a method for the production of a porous cross-linked polymer material which comprises a step of polymerizing a water-in-oil type high internal phase emulsion obtained in the presence of a polyglycerine fatty acid ester. This invention permits an HIPE to be polymerized at a high temperature for the purpose of stabilizing the HIPE and consequently warrants quick production of a porous cross-linked polymer material possessed of an excellent water absorbing property.Type: GrantFiled: June 13, 2002Date of Patent: November 18, 2003Assignees: Nippon Shokubai Co., Ltd., The Proctor & Gamble CompanyInventors: Kenji Kadonaga, Akiko Mitsuhashi, Kazutomo Takahashi
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Publication number: 20030139482Abstract: In producing a porous cross-linked polymer by forming a water-in-oil type high internal phase emulsion and subsequently polymerizing the emulsion, a method for the production of a porous cross-linked polymer material which comprises a step of polymerizing a water-in-oil type high internal phase emulsion obtained in the presence of a polyglycerine fatty acid ester. This invention permits an HIPE to be polymerized at a high temperature for the purpose of stabilizing the HIPE and consequently warrants quick production of a porous cross-linked polymer material possessed of an excellent water absorbing property.Type: ApplicationFiled: June 13, 2002Publication date: July 24, 2003Inventors: Kenji Kadonaga, Akiko Mitsuhashi, Kazutomo Takahashi
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Publication number: 20030090066Abstract: A combined steel oil control ring is provided that has steel side rails 1 and a steel spacer expander 2, 2a. The spacer expander includes ear portions 3, 3a for contacting the side rails. The ear portions are substantially equally spaced with each other along the internal circumferential portion of the spacer expander. The ear portions have a radially external circumferential surface respectively. The radially external circumferential surface of the ear portions is adapted to press the side rails radially outwardly by using resilient force caused by the spacer expander. The spacer expander comprises up-and-down contours each formed circumferentially along the radially external circumferential surface, for preventing the side rails from circumferentially rotating relatively to the spacer expander.Type: ApplicationFiled: November 7, 2002Publication date: May 15, 2003Inventors: Akira Takahashi, Kazutomo Takahashi
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Publication number: 20020193456Abstract: A method for the production of a porous cross-linked polymer material by the polymerization of an HIPE containing a cross-linking agent, characterized by the fact at least one species of the cross-linking agent is a compound having a double bond equivalent f not less than 120 g/mol. The cross-linking agent is preferred to be a compound possessed of an alkylene oxide moiety or a vinyl polymer containing not less than two polymerizing double bonds in the molecular unit. Thus, it is made possible to produce a porous cross-linked polymer material excellent in absorbency and flexibility, permit the HIPE to be polymerized in a short time, and therefore improve the efficiency of production.Type: ApplicationFiled: June 13, 2002Publication date: December 19, 2002Inventors: Masazumi Sasabe, Kenji Kadonaga, Hiroki Inoue, Akiko Mitsuhashi, Hirotama Fujimaru, Masatoshi Yoshida, Masuji Izubayashi, Kazutomo Takahashi
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Patent number: 6395793Abstract: An object of this invention is to provide a method for the production of a porous material by polymerizing a water-in-oil type high internal phase emulsion in a briefer time than a conventional technique without impairing the stability of the emulsion. The object of this invention can be accomplished by a method for the production of a porous material comprising a step of polymerizing a water-in-oil type high internal phase emulsion containing a polymerization initiator, wherein the polymerization initiator is a redox type initiator combining a water-soluble oxidizing agent and a reducing agent, the reducing agent is preparatorily added to form the emulsion, and thereafter the water-soluble oxidizing agent is added to the emulsion to polymerize the added emulsion.Type: GrantFiled: November 14, 2000Date of Patent: May 28, 2002Assignee: Nippon Shokubai Co., Ltd.Inventors: Kenji Kadonaga, Akiko Mitsuhashi, Hirotama Fujimaru, Masazumi Sasabe, Kazutomo Takahashi, Masuji Izubayashi
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Patent number: 6362243Abstract: This invention has for an object thereof the provision of a method for the production of a porous cross-linked polymer which can freely control the upper and lower surface behavior of the porous cross-linked polymer, the width and the thickness of the polymer and can perform continuously a process ranting from a step of supplying the emulsion through a step of polymerizing it. The object of this invention, in the production of a porous cross-linked polymer by polymerizing a water-in-oil type high internal phase emulsion, is accomplished by a method for the production of a porous cross-linked polymer characterized by performing continuously a process ranting from a step of supplying the emulsion through a step of polymerizing it while having the outer surface part of the emulsion retain an atmosphere or a state having a lower oxygen content than the ambient air.Type: GrantFiled: September 8, 2000Date of Patent: March 26, 2002Assignee: Nippon Shokubai Co., Ltd.Inventors: Masazumi Sasabe, Katsuhiko Sakamoto, Hiroshi Yamazaki, Koichi Yonemura, Kenji Kadonaga, Akiko Mitsuhashi, Kazutomo Takahashi, Kozo Nogi, Kenji Minami
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Patent number: 6323250Abstract: An object of this invention is to provide a method for the production of a porous material by polymerizing a water-in-oil type high internal phase emulsion in a briefer time than a conventional technique without impairing the stability of the emulsion. The object of this invention can be accomplished by a method for the production of a porous material comprising a step of polymerizing a water-in-oil type high internal phase emulsion containing a polymerization initiator, wherein the polymerization initiator is a redox type initiator combining an oil-soluble oxidizing agent and a reducing agent, either of the oil-soluble oxidizing agent or the reducing agent is preparatorily added to form the emulsion, and thereafter the remainder of the reducing agent or the oil-soluble oxidizing agent is added to the emulsion to polymerize the added emulsion.Type: GrantFiled: November 14, 2000Date of Patent: November 27, 2001Assignee: Nippon Shokubai Co. LTDInventors: Kenji Kadonaga, Akiko Mitsuhashi, Hirotama Fujimaru, Masazumi Sasabe, Kazutomo Takahashi, Masuji Izubayashi
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Patent number: 6166097Abstract: A method for producing a porous material by forming a water-in-oil type high internal phase emulsion, which method is characterized by causing waste water generated during the process of production to be put to reuse. The waste water is preferred to be reused after the removal of impurities or the adjustment of pH. According to this invention, the waste water can be reused up to 50 repetitions, with the result that the amount of feed water and the amount of waste water will be decreased. Incidentally, by adjusting the pH of the water-in-oil type high internal phase emulsion after the reaction thereof in the range of 4-9, it is made possible to continue the reuse of waste water and, at the same time, lower the stimulating property of the produced porous material.Type: GrantFiled: April 13, 2000Date of Patent: December 26, 2000Assignee: Nippon Shokubai Co., Ltd.Inventors: Koichi Yonemura, Hirotama Fujimaru, Naoko Ikushima, Kazutomo Takahashi
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Patent number: 5484841Abstract: A method for the production of an aqueous dispersion of a long-chain alkyl graft polymer, which method comprises mixing an aqueous solution of a polyamine with a long-chain alkyl isocyanate and stirring the resultant mixture thereby causing reaction of said component reactants, and an aqueous release agent formed therefrom.Type: GrantFiled: October 13, 1994Date of Patent: January 16, 1996Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Kazuo Kodama, Toru Tsuda, Kazutomo Takahashi
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Patent number: 5284909Abstract: An amphoteric polyelectrolite represented by the general formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are H or alkyl, R.sup.5 is H, alkyl or w-OH substituted alkyl, HY is monobasic acid, and Z is amide.Type: GrantFiled: October 13, 1992Date of Patent: February 8, 1994Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Kazutomo Takahashi, Koichi Yamamoto, Kazuo Kodama, Seiichi Suzuki, Takashi Tazaki, Yutaka Morimoto, Hideyuki Nishibayashi
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Patent number: 5252184Abstract: An additive for paper production, comprising an amphoteric polymeric electrolyte having as an essential component thereof a structural unit represented by the following general formula I: ##STR1## wherein n is an integer in the range of 1 to 5, R.sup.1, R.sup.2, and R.sup.3 are independently hydrogen atom or an alkyl group, R.sup.4 is hydrogen atom, an alkyl group, or a hydroxyalkyl group, and a and b are jointly relative numerals such that the a/b ratio is in the range of 0.2 to 45.0), having at least part of the amino group of said amphoteric polymeric electrolyte neutralized, and possessing a cation equivalent amount (Cv) in the range of 1.0 to 15.0 meq/g, an anion equivalent amount (Av) in the range of 0.1 to 7.0 meq/g, and a Cv/Av ratio in the range of 0.2 to 45.0.Type: GrantFiled: October 21, 1991Date of Patent: October 12, 1993Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Yasumasa Tanaka, Koichi Yamamoto, Kazutomo Takahashi
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Patent number: 5194515Abstract: An amphoteric polyelectrolite represented by the general formula: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are H or alkyl, R.sup.5 is H, alkyl or w--OH substituted alkyl, HY is monobasic acid, and Z is amide.Type: GrantFiled: February 23, 1990Date of Patent: March 16, 1993Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Kazutomo Takahashi, Koichi Yamamoto, Kazuo Kodama, Seiichi Suzuki, Takashi Tazaki, Yutaka Morimoto, Hideyuki Nishibayashi
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Patent number: 4865363Abstract: A pipe connection device for a scientific equipment in which a reduced diameter head having slits is formed at a front end part of a clamp covering a packing fitted to an outer circumference of the open end part of the pipe. A part of the packing is positioned within the reduced diameter head. The reduced diameter head, at its extremity end, forms an inclined cylinder part fitted to an inner inclined surface of the fixed screw and also forms a cylinder part to which a pressing ring is engaged and fitted adjacent to the inclined cylinder part. The reduced diameter head is reduced in its diameter by the inner inclined surface under screwing of the fixed screw. The pressing ring, formed to have a slightly smaller diameter than an outer diameter of the cylinder part, is pressed against an open end surface of the inner inclined surface. The pressing ring is raised up over the inclined cylinder part and press fitted onto the cylinder part.Type: GrantFiled: September 9, 1988Date of Patent: September 12, 1989Assignee: Kyoshin Industries Co., Ltd.Inventor: Kazutomo Takahashi
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Patent number: 4806577Abstract: An adhesive composition comprising 10 to 80% by weight of a binder composed of an aminoalkyl ester group-containing acrylic copolymer shown ##STR1## wherein R denotes an alkylene possessing 2 to 3 carbon atoms, as a pendant group and an epoxy resin, and if desired a rust-proofing pigment and a silane coupling agent.Type: GrantFiled: November 14, 1986Date of Patent: February 21, 1989Assignee: Nippon Shokubai Kagaku Kogyo Co., Ltd.Inventors: Kazutomo Takahashi, Kazuo Kodama, Minoru Saotome
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Patent number: 4772487Abstract: Solid reagent film is formed in a micro-well for diagnosis of e.g. AIDS. The process is formed fully automatically without any manual operation. The process includes dispensing reagent solution in micro-wells of one or two rows simultaneously on sequentially feeding microplate, measuring the liquid level in the wells, incubating the wells to form solid film in the well surface, cleaning the dispense nozzles and measuring electrodes by cleaning fluid, dispensing protect cover forming liquid in the wells, measuring the liquid level in the wells, incubating the wells to form protect cover, cleaning the dispense nozzles and electrodes by cleaning fluid, and drying the wells. Also, storing and discharge the microplate relative to magazine, and transferring the microplate through the process are performed automatically.Type: GrantFiled: September 23, 1987Date of Patent: September 20, 1988Assignee: Olympus Optical Company LimitedInventors: Yutaka Gotoh, Masao Agawa, Kazutomo Takahashi, Kiyoshi Takao, Katsuaki Takano