Patents by Inventor Takao Ogino
Takao Ogino 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: 4933506Abstract: A process for the production of dihydric phenoles by oxidizing diisopropylbenzenes, which comprises oxidizing diisopropylbenzenes with molecular oxygen to obtain a reaction product mixture (A) containing at least diisopropylbenzene dihydroperoxide (DHP) and diisopropylbenzene monocarbinol monohydroperoxide (HHP), supply said product mixture (A) in a form of oily phase as a solution in an aromatic hydrocarbon solvent to an agitation reactor, supplying thereto at the same time, as an aqueous phase, hydrogen peroxide at a feed rate of 1-5 moles per mole of HHP contained in the product mixture and an acid catalyst in an amount sufficient to reach a concentration in the aqueous phase of 10-40% by weight, the concentration of hydrogen peroxide in the aqueous phase being maintained at a value of at least 20% by weight and the weight ratio of the oily phase/aqueous phase being at least 10, causing oxidization of the HHP into DHP by hydrogen peroxide while maintaining the reaction temperature at 30.degree.-60.degree.Type: GrantFiled: November 22, 1988Date of Patent: June 12, 1990Assignee: Mitsui Petrochemical Industries, Ltd.Inventors: Takao Ogino, Shunji Arita, Masayuki Takeda, Masaru Kaya
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Patent number: 4865932Abstract: An electric cell comprising a positive electrode, a negative electrode, and an electrolyte containing a lithium salt is provided wherein the negative electrode has a two-layer structure of a lithium-aluminum alloy layer and an aluminum layer. The cell is fabricated by placing a positive electrode, a negative electrode, and an electrolyte in a cell container comprising positive and negative electrode casings, and forming a seal between the positive and negative electrode casings. The negative electrode is electrochemically formed in situ in the cell container from a lithium-clad aluminum substrate.Type: GrantFiled: May 12, 1988Date of Patent: September 12, 1989Assignees: Bridgestone Corporation, Seiko Electronic Components Ltd.Inventors: Yoshitomo Masuda, Isamu Shinoda, Masao Ogawa, Toyoo Harada, Takao Ogino, Kazuo Takayama, Tadaaki Miyazaki, Takahiro Kawagoe
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Patent number: 4863817Abstract: In a nonaqueous electrolyte cell comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte containing an alkali metal ion, an electrolytic manganese dioxide which is prepared by subjecting a manganese dioxide-forming electrolytic solution to electrolysis while introducing a gas therein is used as an active material for the positive electrode.Type: GrantFiled: October 13, 1988Date of Patent: September 5, 1989Assignee: Bridgestone CorporationInventors: Takao Ogino, Tadaaki Miyazaki, Takahiro Kawagoe, Masaki Yoshio
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Patent number: 4830101Abstract: A heat exchanger has special usage such as an evaporator of an automotive air conditioner. This heat exchanger can improve wettability and can reduce a scattering of condensed water. This heat exchanger is treated by a special chemical conversion treatment so that this heat exchanger has two layers of coating on the surface thereof. One of the two layers is a chemical conversion coating formed on the surface of the heat exchanger. The other one is a resin coating formed over the chemical conversion coating. The chemical conversion coating is treated by immersing the heat exchanger into a water solution. The resin coating is also treated by immersing the heat exchanger having the chemical conversion coating into a water solution of organic high polymer material.Type: GrantFiled: April 29, 1986Date of Patent: May 16, 1989Assignees: Nippondenso Co., Ltd., Nihon Parkerizing Co., Ltd.Inventors: Toshio Ohara, Toshio Takahashi, Masayoshi Nishikawa, Tutomu Niwa, Takao Ogino, Ryosuke Sako, Hideaki Kaneko
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Patent number: 4803137Abstract: A non-aqueous electrolyte secondary cell is provided which comprises a positive electrode active material of a modified vanadium pentoxide, a negative electrode active material of lithium or lithium alloy, and a non-aqueous electrolyte.Type: GrantFiled: April 25, 1988Date of Patent: February 7, 1989Assignee: Bridgestone CorporationInventors: Tadaaki Miyazaki, Takao Ogino, Yoshitomo Masuda, Takahiro Kawagoe
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Patent number: 4783224Abstract: A hydrophilic coating is formed on an aluminum surface by the application of an aqueous solution of an amphoteric acrylamide polymer which is dried in place. The polymer solution may contain a cross-linking agent and the dried coating may be subsequently treated to form a water-glass coating.Type: GrantFiled: December 14, 1987Date of Patent: November 8, 1988Assignee: Nihon Parkerizing Co., Ltd.Inventors: Ryosuke Sako, Takao Ogino, Motoki Kanazawa, Akira Nishihara, Hiroshi Okita, Yoshinori Sakamoto
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Patent number: 4765386Abstract: A radial tire for use in passenger cars is disclosed which is excellent in motion performance and durability. The tire has a carcass cord layer in which steel cords of a single strand construction represented by (1xn) in which n is a number of filament yarns and is an integer of from 1 to 5 are embedded in rubber. The thickness of the rubber between the adjacent steel cords is in a range between 0.80 and 2.00 mm when measured in a tire circumferential direction at a location having a tire maximum width in an arrangement of the steel cords in the carcass cord layer. A product (nxd.sup.4) between a number (m) of the filament yarns constituting the steel cord of the single strand construction and a diameter (d) of the filaments is in a range of 0.002 to 0.012. The diameter of the filaments is in a range between 0.15.ltoreq.d.ltoreq.0.25 mm.Type: GrantFiled: December 4, 1986Date of Patent: August 23, 1988Assignee: Bridgestone CorporationInventors: Takao Ogino, Sumito Nakagawa
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Patent number: 4726886Abstract: A method for imparting wettability to an aluminum heat exchanger comprises immersing the heat exchanger in an aqueous medium containing a silanol compound and polyvinyl pyrrolidone. If desired, the exchanger may be conversion coated or anodized prior to the immersion.Type: GrantFiled: May 11, 1987Date of Patent: February 23, 1988Assignee: Nihon Parkerizing Co., Ltd.Inventors: Hideaki Kaneko, Takao Ogino, Ryosuke Sako
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Patent number: 4653259Abstract: A reinforcement for rubber is disclosed, which comprises a cord made from an amorphous iron-base alloy filament previously subjected to a wire drawing at a reduction of area of not less than 10%.Type: GrantFiled: August 14, 1985Date of Patent: March 31, 1987Assignee: Bridgestone CorporationInventor: Takao Ogino
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Patent number: 4650525Abstract: A composition and process useful in forming films on the surface of aluminum or its alloys is disclosed. The composition is an aqueous solution containing an alkali metal, silicon, fluorine, zinc and iron. The film is an adherent hydrophilic corrosion resistant film useful as such and/or as a lubricating film in metal forming.Type: GrantFiled: April 5, 1985Date of Patent: March 17, 1987Assignee: Nihon Parkerizing Co., Ltd.Inventors: Atsunori Yoshida, Hideaki Kaneko, Takao Ogino
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Patent number: 4631798Abstract: A release agent applicator for a copying machine in which voids in the release agent contained in the applicator are substantially eliminated, thus providing an improved spreading performance of the release agent onto a fixing roll of the copying machine. The release agent applicator is made of a porous polyethylene tetrafluoride tube, the pores of which are partially closed except in areas where the release agent is to ooze out onto the fixing roll. Those partially closed pores in the tube are partially closed by a flattening operation so that they cannot draw release agent thereinto by capillary action.Type: GrantFiled: October 11, 1985Date of Patent: December 30, 1986Assignees: Sumitomo Electric Industries, Ltd., Sharp Kabushiki KaishaInventors: Takao Ogino, Hiroo Katsuya, Chiaki Kato, Sigelu Omori, Satsuki Kawauchi, Itsuro Kato, Tsutomu Kato
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Patent number: 4628977Abstract: A high-durable pneumatic radial tire is disclosed using steel cords in at least one of the carcass and the belt. This steel cord is produced by twisting plural steel filaments each having a tensile strength of not less than 220 kgf/mm.sup.2, whose metallic structure being a fine pearlite structure having an average value of interlamellar distance between cementites of 300-500 .ANG. and an average sectional area of single pearlite crystal grain in filament section of not more than 20 .mu.m.sup.2.Type: GrantFiled: October 31, 1984Date of Patent: December 16, 1986Assignee: Bridgestone CorporationInventors: Takao Ogino, Yoichi Watanabe, Shigehisa Sano
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Patent number: 4580521Abstract: A release agent applicator for use with a copying machine providing even application of the release agent to a fixing roll of a plain paper copying machine with little leakage of the release agent. A porous polyethylene tetrafluoride resin tube is accommodated in a divided-type support composed of two members which, when joined together, form a longitudinally extending opening having a width smaller than the maximum width of a cavity formed inside the support. The major portion of the outer surface of the porous resin tube is in contact with abutting walls of the cavity to be sealed thereby, and the remaining portion of the tube surface extends outwardly through the support opening to provide a release agent outlet. Both the porous tube and the support may be provided with air inlets having the diameter greater than the diameters of the pores in the porous tube to introduce air into the interior of the porous tube.Type: GrantFiled: May 16, 1984Date of Patent: April 8, 1986Assignees: Sumitomo Electric Industries, Ltd., Sharp Kabushiki KaishaInventors: Takao Ogino, Hiroo Katsuya, Chiaki Kato, Itsuro Kato, Tsutomu Kato
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Patent number: 4573428Abstract: An improved release agent applicator for use with a copying machine in which a porous polyethylene tetrafluoride resin tube is installed in a support with the part of the tube which forms an outlet for the release agent contained in the tube projecting from an opening in the support. The outer surface of the porous tube is covered with a film of a polymer having a low melting point, such as polyethylene. When the applicator is installed, the normal heating of the fixing roll causes the polymer film to melt, opening the applicator for use. Accordingly, leakage from the applicator prior to use is prevented.Type: GrantFiled: May 16, 1984Date of Patent: March 4, 1986Assignees: Sumitomo Electric Industries, Ltd., Sharp Kabushiki KaishaInventors: Takao Ogino, Hiroo Katsuya, Chiaki Kato, Itsuro Kato, Tsutomu Kato
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Patent number: 4572264Abstract: A pneumatic radial tire is disclosed, which comprises steel cords having a two or three layer construction represented by a designation of l+m or l+m+n as a tire reinforcement, wherein two layers at a center side of a transverse section in the steel cord have the same twisting direction but different twisting pitches. In this steel cord, m filaments constituting an outer layer are arranged so as to enter into an inside of a circumscribed circle enveloping l filaments of an inner layer at a non-contact region above a predetermined value and have a form ratio of 90-110%.Type: GrantFiled: December 15, 1983Date of Patent: February 25, 1986Assignee: Bridgestone Tire Co., Ltd.Inventors: Yujiro Umezawa, Shigehisa Sano, Takao Ogino
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Patent number: 4520857Abstract: A high-durable pneumatic radial tire is disclosed. In the tire of this type, steel cords each made from particular steel filaments are used in at least one of belt and carcass. This steel filament has a pearlite structure having an average value of interlamellar distance between cementites of 300-500 .ANG., and a tensile strength of not less than 220 kgf/mm.sup.2.Type: GrantFiled: November 8, 1983Date of Patent: June 4, 1985Assignee: Bridgestone Tire Company LimitedInventors: Takao Ogino, Yoichi Watanabe, Shigehisa Sano
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Patent number: 4368776Abstract: An aluminum heat exchanger with excellent corrosion resistance and particularly suited for adaptation as radiator for automobiles, the heat exchanger having a 2- or 3-layer coating film structure consisting of a zinc-diffused layer formed on the surface of an aluminum base and a waterproof organic film formed on the zinc-diffused layer with or without a phosphoric acid-chromate coating therebetween, whereby the surface of the aluminum base is not directly contacted with at least the water-containing heat exchange medium is provided.Type: GrantFiled: June 11, 1981Date of Patent: January 18, 1983Assignees: Nippondenso Co., Ltd., Nihon Pakerizing Co., Ltd.Inventors: Junichi Negita, Yuichiro Yamada, Hideaki Kaneko, Takao Ogino
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Patent number: 4272351Abstract: A process and apparatus for electrolytic etching of aluminum or its alloy is disclosed wherein an electric current is passed between an anode and a cathode which are spaced opposed in an electrolytic bath with a workpiece removably supported on an insulating frame so that the side of the workpiece to be etched faces the cathode, the insulating frame being disposed between the anode and the cathode and having at least one opening formed therein.Type: GrantFiled: January 25, 1980Date of Patent: June 9, 1981Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yasutoyo Kotani, Kazuo Sawada, Shuzo Nagai, Takao Ogino, Seiji Watabe
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Patent number: 4230758Abstract: A fluorine resin coated aluminum structure comprising:(a) an aluminum substrate with a roughened surface;(b) a coating of aluminum oxide formed on the surface of the aluminum substrate; and(c) a baked coating of a fluorine resin firmly bonded to the aluminum oxide coating, the fluorine resin coating having a thickness of about 5 to about 100 microns and a surface roughness represented by an R.sub.max value of about 5 to about 60 (.mu.) and an R.sub.z value of about 4 to about 50 (.mu.). This aluminum structure is especially useful as a material for cookware because of its superior anti-stick and low friction characteristics and the good adhesion of the resin coating to the substrate.Type: GrantFiled: August 6, 1979Date of Patent: October 28, 1980Assignee: Sumitomo Electric Industries, Ltd.Inventors: Shuzo Nagai, Seiji Watabe, Takao Ogino, Koichi Okita
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Patent number: 4220508Abstract: A process and apparatus for electrolytic etching of aluminum or its alloy is disclosed wherein an electric current is passed between an anode and a cathode which are spaced opposed in an electrolytic bath with a workpiece removably supported on an insulating frame so that the side of the workpiece to be etched faces the cathode, the insulating frame being disposed between the anode and the cathode and having at least one opening formed therein.Type: GrantFiled: October 27, 1978Date of Patent: September 2, 1980Assignee: Sumitomo Electric Industries, Ltd.Inventors: Yasutoyo Kotani, Kazuo Sawada, Shuzo Nagai, Takao Ogino, Seiji Watabe