Patents by Inventor Toshiaki Takase
Toshiaki Takase 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: 7923143Abstract: A battery separator comprising a nonwoven fabric, wherein the nonwoven fabric contains (1) superfine fibers having a fiber diameter of 3 ?m or less, (2) noncircular fine fibers having a noncircular cross-sectional shape and having a fiber diameter of 3 to 5 ?m (excluding 3 ?m), the fiber diameter meaning a diameter of a circle having an area the same as that of the noncircular cross-sectional shape, and (3) polypropylene based high-strength composite fibers containing a fusible component on the surface thereof and having a tensile strength of 4.5 cN/dtex or more, and the fusible component contained in the polypropylene based high-strength composite fibers is fused, and a battery comprising the battery separator are disclosed. A battery separator of the present invention has a high electrolyte-holding capacity and is capable of effectively preventing a short circuit, even if the separator is designed to be thinner to enhance the capacity of a battery.Type: GrantFiled: January 26, 2006Date of Patent: April 12, 2011Assignee: Japan Vilene Company, Ltd.Inventors: Masanao Tanaka, Toshiaki Takase, Yasuhiro Ito, Yoshihiko Kondo
-
Patent number: 7598001Abstract: An alkaline battery comprises an electrode. The electrode has a current collector and an active substance filled in the current collector. The current collector includes a nonwoven fabric fabricated from a plurality of fibers and a nickel-plating film formed on the plurality of fibers. A specific surface area per unit volume of the current collector is 0.13 m2/cm3-0.35 m2/cm3.Type: GrantFiled: June 3, 2005Date of Patent: October 6, 2009Assignees: Sanoh Industrial Co., Ltd., JEMCO Inc., Japan Vilene Company Ltd.Inventors: Kazuya Tsuda, Kunikazu Nagai, Hiroyuki Imai, Yoshitaka Mayuzumi, Kazuya Sato, Toshiaki Takase, Masanao Tanaka
-
Patent number: 7402539Abstract: Disclosed is a battery separator consisting essentially of a nonwoven fabric having a substantially unilayered structure, wherein an apparent total surface area of fibers per a surface density of the nonwoven fabric is 20 m2 or more, a thickness of the nonwoven fabric is 0.1 mm or less, a uniformity index of the nonwoven fabric is 0.15 or less, and the nonwoven fabric contains fine fibers having a fiber diameter of 4 ?m or less.Type: GrantFiled: August 9, 2001Date of Patent: July 22, 2008Assignee: Japan Vilene Co., Ltd.Inventors: Toshiaki Takase, Yoshihiko Kondo, Noriko Miyaguchi, Masanao Tanaka
-
Publication number: 20060194100Abstract: A battery separator comprising a nonwoven fabric, wherein the nonwoven fabric contains (1) superfine fibers having a fiber diameter of 3 ?m or less, (2) noncircular fine fibers having a noncircular cross-sectional shape and having a fiber diameter of 3 to 5 ?m (excluding 3 ?m), the fiber diameter meaning a diameter of a circle having an area the same as that of the noncircular cross-sectional shape, and (3) polypropylene based high-strength composite fibers containing a fusible component on the surface thereof and having a tensile strength of 4.5 cN/dtex or more, and the fusible component contained in the polypropylene based high-strength composite fibers is fused, and a battery comprising the battery separator are disclosed. A battery separator of the present invention has a high electrolyte-holding capacity and is capable of effectively preventing a short circuit, even if the separator is designed to be thinner to enhance the capacity of a battery.Type: ApplicationFiled: January 26, 2006Publication date: August 31, 2006Applicant: Japan Vilene Company, Ltd.Inventors: Masanao Tanaka, Toshiaki Takase, Yasuhiro Ito, Yoshihiko Kondo
-
Publication number: 20050277025Abstract: An alkaline battery comprises an electrode. The electrode has a current collector and an active substance filled in the current collector. The current collector includes a nonwoven fabric fabricated from a plurality of fibers and a nickel-plating film formed on the plurality of fibers. A specific surface area per unit volume of the current collector is 0.13 m2/cm3-0.35 m2/cm3.Type: ApplicationFiled: June 3, 2005Publication date: December 15, 2005Inventors: Kazuya Tsuda, Kunikazu Nagai, Hiroyuki Imai, Yoshitaka Mayuzumi, Kazuya Sato, Toshiaki Takase, Masanao Tanaka
-
Patent number: 6783895Abstract: A hydrophilic collector for alkaline secondary batteries is formed of a nonwoven fabric plated with nickel in which the nonwoven fabric is hydrophilized by sulfonation, a gaseous fluorine treatment, or vinyl monomer grafting. A method for making the collector includes a hydrophilizing step of a nonwoven fabric comprising at least one of a polyolefin fiber and a polyamide fiber, and a plating step of applying nickel plating to the hydrophilic nonwoven fabric. Preferably, the nickel plating is electroless plating, and the nonwoven fabric has a plurality of micropores extending from one surface to the other surface thereof. An electroplating film may be deposited on the electroless plated film, if necessary. This collector facilitates assembling a battery which exhibits improved high-rate discharge characteristics due to improved adhesiveness of the plated nickel film to the nonwoven fabric.Type: GrantFiled: February 21, 2001Date of Patent: August 31, 2004Assignees: Mitsubishi Materials Corporation, Japan Vilene Company, Ltd.Inventors: Hiroyuki Imai, Kaori Yoshida, Toshiaki Takase, Kazuya Satou
-
Patent number: 6772489Abstract: A hydrophilic collector for alkaline secondary batteries is formed of a nonwoven fabric plated with nickel in which the nonwoven fabric is hydrophilized by sulfonation, a gaseous fluorine treatment, or vinyl monomer grafting. A method for making the collector includes a hydrophilizing step of a nonwoven fabric comprising at least one of a polyolefin fiber and a polyamide fiber, and a plating step of applying nickel plating to the hydrophilic nonwoven fabric. Preferably, the nickel plating is electroless plating, and the nonwoven fabric has a plurality of micropores extending from one surface to the other surface thereof. An electroplating film may be deposited on the electroless plated film, if necessary. This collector facilitates assembling a battery which exhibits improved high-rate discharge characteristics due to improved adhesiveness of the plated nickel film to the nonwoven fabric.Type: GrantFiled: November 4, 2002Date of Patent: August 10, 2004Assignees: Mitsubishi Materials Corporation, Japan Vilene Company, Ltd.Inventors: Hiroyuki Imai, Kaori Yoshida, Toshiaki Takase, Kazuya Satou
-
Patent number: 6607859Abstract: An alkaline battery separator which enables the preparation of a battery with a good yield and workability is provided. The alkaline battery separator of the present invention comprises a fiber sheet mainly comprising hydrophilicity-imparted polyolefin fibers having a fiber diameter of 8 &mgr;m or more, and a part of the hydrophilicity-imparted polyolefin fibers is composed of high-strength fibers having a tensile strength of 5 g/d or more.Type: GrantFiled: October 8, 2000Date of Patent: August 19, 2003Assignee: Japan Vilene Company, Ltd.Inventors: Masanao Tanaka, Masaki Hirooka, Toshiaki Takase
-
Patent number: 6586137Abstract: A battery separator is provided which is hardly broken by tension during the manufacture of batteries, is hardly punctured with a plate flash, and is hardly torn off with a plate edge, thereby hardly causing a short circuit. Accordingly, the separator can facilitate the stable manufacture of the batteries. The battery separator is equipped with a fiber sheet containing a polypropylene fiber having a tensile strength of not less than 10 g/d (denier) and a Young's modulus of not less than 800 kg/mm2, said separator having a resistance of not less than 585 gf to puncture by edge, or is equipped with a fiber sheet containing not less than 10 mass % of a polypropylene fiber having a tensile strength of not less than 10 g/d (denier) and a Young's modulus of not less than 800 kg/mm2.Type: GrantFiled: September 8, 2000Date of Patent: July 1, 2003Assignees: Japan Vilene Company, Ltd., UBE-Nitto Kasei Co., Ltd.Inventors: Masanao Tanaka, Hiroaki Yamazaki, Yoshihiko Kondo, Keisuke Takahashi, Toshiaki Takase, Shinji Oota
-
Publication number: 20030091902Abstract: A hydrophilic collector for alkaline secondary batteries is formed of a nonwoven fabric plated with nickel in which the nonwoven fabric is hydrophilized by sulfonation, a gaseous fluorine treatment, or vinyl monomer grafting. A method for making the collector includes a hydrophilizing step of a nonwoven fabric comprising at least one of a polyolefin fiber and a polyamide fiber, and a plating step of applying nickel plating to the hydrophilic nonwoven fabric. Preferably, the nickel plating is electroless plating, and the nonwoven fabric has a plurality of micropores extending from one surface to the other surface thereof. An electroplating film may be deposited on the electroless plated film, if necessary. This collector facilitates assembling a battery which exhibits improved high-rate discharge characteristics due to improved adhesiveness of the plated nickel film to the nonwoven fabric.Type: ApplicationFiled: November 4, 2002Publication date: May 15, 2003Applicant: MITSUBISHI MATERIALS CORPORATIONInventors: Hiroyuki Imai, Kaori Yoshida, Toshiaki Takase, Kazuya Satou
-
Publication number: 20020090876Abstract: Disclosed is a battery separator consisting essentially of a nonwoven fabric having a substantially unilayered structure, wherein an apparent total surface area of fibers per a surface density of the nonwoven fabric is 20 m2/m2 or more, a thickness of the nonwoven fabric is 0.1 mm or less, a uniformity index of the nonwoven fabric is 0.15 or less, and the nonwoven fabric contains fine fibers having a fiber diameter of 4 &mgr;m or less.Type: ApplicationFiled: August 9, 2001Publication date: July 11, 2002Applicant: JAPAN VILENE CO., LTD.Inventors: Toshiaki Takase, Yoshihiko Kondo, Noriko Miyaguchi, Masanao Tanaka
-
Publication number: 20010031402Abstract: A hydrophilic collector for alkaline secondary batteries is formed of a nonwoven fabric plated with nickel in which the nonwoven fabric is hydrophilized by sulfonation, a gaseous fluorine treatment, or vinyl monomer grafting. A method for making the collector includes a hydrophilizing step of a nonwoven fabric comprising at least one of a polyolefin fiber and a polyamide fiber, and a plating step of applying nickel plating to the hydrophilic nonwoven fabric. Preferably, the nickel plating is electroless plating, and the nonwoven fabric has a plurality of micropores extending from one surface to the other surface thereof. An electroplating film may be deposited on the electroless plated film, if necessary. This collector facilitates assembling a battery which exhibits improved high-rate discharge characteristics due to improved adhesiveness of the plated nickel film to the nonwoven fabric.Type: ApplicationFiled: February 21, 2001Publication date: October 18, 2001Applicant: Mitsubishi Materials CorporationInventors: Hiroyuki Imai, Kaori Yoshida, Toshiaki Takase, Kazuya Satou
-
Patent number: 5186102Abstract: A printer using a stencil is disclosed which has a function of forming the images carried on a plurality of documents in any desired positions of a single stencil in combination. The printer also has a function of printing a document image in a desired position of a printing medium or sheet even when the image formed in a stencil is in a reduced or enlarged scale.Type: GrantFiled: October 9, 1991Date of Patent: February 16, 1993Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Kanno, Yuuki Wagatsuma, Toshiaki Takase
-
Patent number: RE41203Abstract: An alkaline battery separator which enables the preparation of a battery with a good yield and workability is provided. The alkaline battery separator of the present invention comprises a fiber sheet mainly comprising hydrophilicity-imparted polyolefin fibers having a fiber diameter of 8 ?m or more, and a part of the hydrophilicity-imparted polyolefin fibers is composed of high-strength fibers having a tensile strength of 5 g/d or more.Type: GrantFiled: February 8, 2000Date of Patent: April 6, 2010Assignee: Japan Vilene Company, Ltd.Inventors: Masanao Tanaka, Masaki Hirooka, Toshiaki Takase