Patents by Inventor Toshihiro Yoshida
Toshihiro Yoshida 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: 20090123846Abstract: An all-solid-state cell contains a combination of an electrode active material and a solid electrolyte, and has a plate-shaped fired solid electrolyte body of a ceramic containing a solid electrolyte, a first electrode layer (e.g. a positive electrode) integrally formed on one surface of the fired solid electrolyte body by mixing and firing an electrode active material and a solid electrolyte, and a second electrode layer (e.g. a negative electrode) integrally formed on the other surface of the fired solid electrolyte body by mixing and firing an electrode active material and a solid electrolyte. The solid electrolyte materials added to the first electrode layer and the second electrode layer comprise an amorphous polyanion compound.Type: ApplicationFiled: November 10, 2008Publication date: May 14, 2009Applicants: Kyushu University, NGK Insulators, Ltd.Inventors: Shigeto OKADA, Eiji KOBAYASHI, Kazuhiro YAMAMOTO, Toshihiro YOSHIDA, Yosuke SATO
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Patent number: 7510800Abstract: An all-solid battery having a high output power is provided which exhibits high safety and is capable of being produced at a low cost is provided. The all-solid battery includes an internal electrode body having a cathode comprising a cathode material, an anode comprising an anode material, and a solid electrolyte layer comprising a solid electrolyte. The cathode material, the anode material, and the solid electrolyte are phosphoric acid compounds. The internal electrode body is integrated by firing the cathode, the anode, and the solid electrolyte layer, and the internal electrode body contains water.Type: GrantFiled: February 23, 2007Date of Patent: March 31, 2009Assignees: NGK Insulators, Ltd., Kyushu UniversityInventors: Toshihiro Yoshida, Hiroyuki Katsukawa, Kazuhiro Yamamoto, Shigeto Okada
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Patent number: 7501202Abstract: A lithium secondary cell includes an internal electrode body having a positive electrode plate and a negative electrode plate wound and laminated around an external peripheral wall of a hollow cylindrical winding core. The inside of the internal electrode body is impregnated with a nonaqueous electrolyte solution. A cylindrical cell case houses the internal electrode body and has open ends sealed with plate member electrode caps. An external terminal member protrudes onto the surface of the electrode caps to lead current to the outside of the cell case, and an internal terminal member connects with the internal electrode body to take current from the internal electrode body. An elastic body and at least two of the plate member, the external terminal member and the internal terminal member are joined together for construction. An assembly of lithium secondary cells is also disclosed.Type: GrantFiled: December 13, 2004Date of Patent: March 10, 2009Assignee: NGK Insulators, Ltd.Inventors: Akio Enomoto, Kenji Kawamura, Kenshin Kitoh, Toshihiro Yoshida, Hiroshi Nemoto, Shinji Otsubo
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Patent number: 7500860Abstract: A lever type connector in which a connector holder is reliably fit into a receptacle holder to prevent a half-fitting is provided. In the lever type connector, a restricting recess is provided on the front side of an arm plate of a lever, and below a multiple force recess. When a connector holder is inserted into the receptacle, a rear surface of the restricting recess abuts to a rear surface of a receiving portion to restrict rotation of the lever. Then, when the connector holder is pushed down to the standby position where the receiving portion is inserted into the multiple force recess, the restricting recess is away from the rear surface of the receiving portion, so that restriction of rotation of the lever is cancelled.Type: GrantFiled: October 18, 2007Date of Patent: March 10, 2009Assignee: The Furukawa Electric Co., Ltd.Inventors: Yoji Tajiri, Toshihiro Yoshida, Yasuharu Suruga, Katsunori Takeda, Takeshi Watanabe, Hiroshi Kobayashi
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Patent number: 7445475Abstract: A lever connector is provided where fitting of a connector holder is reliably performed by rotation of a lever, so that workability is excellent. In a connector holder 2, a provisionally-retaining claw 17 is provided to be elastically held by a first retaining portion 14 at a predetermined rotating position in order to restrict rotation of the lever 5. In a receptacle connector 3, a pressing projection 23 is provided to move the provisionally-retaining claw 17 to a retracted position where the provisionally-retaining claw 17 is not held by the lever 5 in a state that the connector holder 2 is at a standby position, so that restriction of rotation of the lever 5 is cancelled. On the other hand, an abutting surface of the first retaining position 14 of the lever 5 is of a mountain-like shape including a restricting surface 19 and a guiding surface 20.Type: GrantFiled: October 18, 2007Date of Patent: November 4, 2008Assignee: The Furukawa Electric Co., Ltd.Inventors: Yoji Tajiri, Toshihiro Yoshida, Yasuharu Suruga, Katsunori Takeda, Takeshi Watanabe, Hiroshi Kobayashi
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Publication number: 20080213674Abstract: The present invention provides a secondary battery using a liquid electrolyte excellent in storage characteristics. The secondary battery includes a cathode, an anode, and a liquid electrolyte, where the cathode and the anode contain at least one mutual active material. This symmetrical electrode configuration, that the at least one active material for the cathode and the anode is mutual, enables equalization of an electrode electric potential difference before charge or after discharge; and thus electrolyte degradation is efficiently restrained to improve storage characteristics.Type: ApplicationFiled: February 22, 2008Publication date: September 4, 2008Applicants: NGK Insulators, Ltd., Kyushu UniversityInventors: Shigeto Okada, Plashnitsa Larisa, Eiji Kobayashi, Yoshinori Noguchi, Takayuki Doi, Jun-ichi Yamaki, Toshihiro Yoshida, Kazuhiro Yamamoto, Hiroyuki Katsukawa
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Publication number: 20080096408Abstract: A lever type connector in which a connector holder is reliably fit into a receptacle holder to prevent a half-fitting is provided. In the lever type connector, a restricting groove 19 is provided on the front side of an arm plate 6 of a lever 5, and below a multiple force groove 14. When a connector holder 2 is inserted into the receptacle 3, a rear surface of the restricting groove 19 abuts to a rear surface of a receiving portion 18 to restrict rotation of the lever 5. Then, when the connector holder 2 is pushed down to the standby position where the receiving portion 18 is inserted into the multiple force groove 14, the restricting groove 19 is away from the rear surface of the receiving portion 18, so that restriction of rotation of the lever 5 is cancelled.Type: ApplicationFiled: October 18, 2007Publication date: April 24, 2008Applicant: The Furukawa Electric Co, Ltd.Inventors: Yoji Tajiri, Toshihiro Yoshida, Yasuharu Suruga, Katsunori Takeda, Takeshi Watanabe, Hiroshi Kobayashi
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Publication number: 20080096397Abstract: A lever connector is provided where fitting of a connector holder is reliably performed by rotation of a lever, so that workability is excellent. In a connector holder 2, a provisionally-retaining claw 17 is provided to be elastically held by a first retaining portion 14 at a predetermined rotating position in order to restrict rotation of the lever 5. In a receptacle connector 3, a pressing projection 23 is provided to move the provisionally-retaining claw 17 to a retracted position where the provisionally-retaining claw 17 is not held by the lever 5 in a state that the connector holder 2 is at a standby position, so that restriction of rotation of the lever 5 is cancelled. On the other hand, an abutting surface of the first retaining position 14 of the lever 5 is of a mountain-like shape including a restricting surface 19 and a guiding surface 20.Type: ApplicationFiled: October 18, 2007Publication date: April 24, 2008Applicant: THE FURUKAWA ELECTRIC CO., LTD.Inventors: Yoji Tajiri, Toshihiro Yoshida, Yasuharu Suruga, Katsunori Takeda, Takeshi Watanabe, Hiroshi Kobayashi
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Publication number: 20080081257Abstract: The all-solid battery element of the invention is designed to simultaneously satisfy the increased contact area of electrodes with an electrolyte layer and the decreased thickness of the electrolyte layer. The all-solid battery element of the invention has at least one unit cell. The unit cell includes: a cathode having a cathode active material; an anode having an anode active material; and a solid electrolyte layer that is interposed between and is in contact with both the cathode and the anode. In the at least one unit cell, the solid electrolyte layer has a specific array structure of arranging at least part of the cathode and at least part of the anode in an alternate manner or in a zigzag manner.Type: ApplicationFiled: August 24, 2007Publication date: April 3, 2008Applicant: NGK Insulators, Ltd.Inventors: Toshihiro Yoshida, Hiroyuki Katsukawa, Fumitake Takahashi
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Publication number: 20070279865Abstract: An inverter apparatus includes heating components housed in an inverter main body and cooling fans for cooling the heating components. The inverter apparatus includes a fan unit case in which the cooing fans are housed as one integral unit, a housing space formed on an outer side of a ceiling surface of the inverter main body, and a fan cover that fixes the fan unit case. The fan unit case is slid to be housed in the housing space. The inverter apparatus makes it easier to replace cooling fans, reduce the number of components, enhance cooling efficiency, and secure high reliability.Type: ApplicationFiled: May 17, 2007Publication date: December 6, 2007Applicant: FUJI ELECTRIC FA COMPONENTS & SYSTEMS CO., LTD.Inventors: Toshihiro Yoshida, Yoshihisa Hatozaki
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Publication number: 20070202400Abstract: An all-solid battery having a high output power, exhibiting high safety, and capable of being produced at a low cost is provided. The all-solid battery (8) includes an internal electrode body (6) having a cathode (1) comprising a cathode material, an anode (2) comprising an anode material, and a solid electrolyte layer (3) comprising a solid electrolyte, the cathode material, the anode material, and the solid electrolyte being phosphoric acid compounds, the internal electrode body (6) being integrated by firing the cathode (1), anode (2), and solid electrolyte layer (3), and the internal electrode body (6) containing water.Type: ApplicationFiled: February 23, 2007Publication date: August 30, 2007Applicants: NGK Insulators, Ltd., Kyushu UniversityInventors: Toshihiro YOSHIDA, Hiroyuki Katsukawa, Kazuhiro Yamamoto, Shigeto Okada
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Publication number: 20070202414Abstract: An all-solid-state battery having a high output power and a long life, exhibiting high safety, and being produced at a low cost is provided. The all-solid-state battery has a cathode comprising a cathode material, an anode comprising an anode material, and a solid electrolyte layer comprising a solid electrolyte, wherein the cathode material, the anode material, and the solid electrolyte are a compound shown by the following formulas (1), (2), and (3), respectively: MaN1bX1c ??(1) MdN2eX2f ??(2) MgN3hX3i ??(3) wherein M represents H, Li, Na, Mg, Al, K, or Ca and X1, X2, and X3 are polyanions, each of N1 and N2 is at least one atom selected from the group consisting of transition metals, Al, and Cu, and N3 is at least one atom selected from the group consisting of Ti, Ge, Hf, Zr, Al, Cr, Ga, Fe, Sc, and In.Type: ApplicationFiled: February 23, 2007Publication date: August 30, 2007Applicants: NGK Insulators, Ltd., Kyushu UniversityInventors: Toshihiro YOSHIDA, Hiroyuki Katsukawa, Shigeto Okada
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Patent number: 7147962Abstract: A lithium secondary battery comprises an internal electrode body formed by winding a positive electrode and a negative electrode on an outer peripheral wall of a hollow winding core, nonaqueous electrolyte solution contained in the case, a cylindrical battery case containing this internal electrode body inside, at least one electrode cap sealing the internal electrode body, and at least one pressure release hole in a position corresponding with the center axis of the winding core.Type: GrantFiled: July 13, 2004Date of Patent: December 12, 2006Assignee: NGK Insulators, Ltd.Inventors: Akio Enomoto, Kenji Kawamura, Kenshin Kitoh, Toshihiro Yoshida
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Patent number: 7135253Abstract: To provide a lithium secondary battery with a high critical discharge current even under a low temperature condition, with an excellent cycle characteristic and reduced manufacturing cost. The lithium secondary battery includes a wound type electrode body comprising a positive electrode plate, and a negative electrode plate both of which have been wound around a core via a separator, the electrode body being impregnated with a non-aqueous electrolyte, and a cylindrical case for housing the electrode body and the non-aqueous electrolyte; the case having at least one opening at either end thereof, which can be sealed. The separator is subjected to drying treatment after the electrode body is inserted into the cylindrical case.Type: GrantFiled: November 4, 2002Date of Patent: November 14, 2006Assignee: NGK Insulators, Ltd.Inventors: Toshihiko Nakagawa, Kenshin Kitoh, Hiroshi Nemoto, Toshihiro Yoshida
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Publication number: 20060115737Abstract: A lithium secondary cell includes an electrode body impregnated with a non-aqueous electrolyte having a positive electrode and a negative electrode wound or laminated with a separator inserted in between. The discharge limit of the electrode body is evaluated by means of affinity of the non-aqueous electrolyte for the separator. This method is capable of selecting an optimal combination between a separator and non-aqueous electrolyte and evaluating a discharge limit of the electrode body before finally manufacturing a lithium secondary cell.Type: ApplicationFiled: January 18, 2006Publication date: June 1, 2006Applicant: NGK Insulators, Ltd.Inventors: Toshihiro Yoshida, Hiroshi Nemoto
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Publication number: 20050100785Abstract: A lithium secondary cell includes an internal electrode body having a positive electrode plate and a negative electrode plate wound and laminated around an external peripheral wall of a hollow cylindrical winding core. The inside of the internal electrode body is impregnated with a nonaqueous electrolyte solution. A cylindrical cell case houses the internal electrode body and has open ends sealed with plate member electrode caps. An external terminal member protrudes onto the surface of the electrode caps to lead current to the outside of the cell case, and an internal terminal member connects with the internal electrode body to take current from the internal electrode body. An elastic body and at least two of the plate member, the external terminal member and the internal terminal member are joined together for construction. An assembly of lithium secondary cells is also disclosed.Type: ApplicationFiled: December 13, 2004Publication date: May 12, 2005Applicant: NGK Insulators, Ltd.Inventors: Akio Enomoto, Kenji Kawamura, Kenshin Kitoh, Toshihiro Yoshida, Hiroshi Nemoto, Shinji Otsubo
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Patent number: 6884541Abstract: A lithium secondary battery includes a cylindrical battery case provided with electrode caps at both end portions thereof. An electrode body impregnated with a nonaqueous electrolyte solution is contained in the battery case and includes a positive electrode, a negative electrode, and a separator, with the positive electrode and the negative electrode being wound or laminated through the separator. An elastic body is disposed between the battery case and the electrode caps, with portions in which the battery case contacts the elastic body being brought into press-contact to form a caulked portion to seal the battery case. Rbody(mm) is a diameter of a body part of the battery case and Rtop(mm) is a diameter of the caulked portion, wherein Rbody and Rtop fulfill a relationship of Rbody>Rtop.Type: GrantFiled: February 8, 2001Date of Patent: April 26, 2005Assignee: NGK Insulators, Ltd.Inventors: Akio Enomoto, Kenji Kawamura, Kenshin Kitoh, Toshihiro Yoshida
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Publication number: 20050079405Abstract: A lithium secondary battery comprises an internal electrode body formed by winding a positive electrode and a negative electrode on an outer peripheral wall of a hollow winding core, nonaqueous electrolyte solution contained in the case, a cylindrical battery case containing this internal electrode body inside, at least one electrode cap sealing the internal electrode body, and at least one pressure release hole in a position corresponding with the center axis of the winding core.Type: ApplicationFiled: July 13, 2004Publication date: April 14, 2005Applicant: NGK Insulators, LtdInventors: Akio Enomoto, Kenji Kawamura, Kenshin Kitoh, Toshihiro Yoshida
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Patent number: 6866961Abstract: A lithium secondary battery has an internal electrode body formed by winding a positive electrode and a negative electrode on an outer peripheral wall of a hollow winding core and filled with nonaqueous electrolyte solution, a cylindrical battery case containing this internal electrode body 1 inside with its both ends being open, and electrode caps which each have a battery cap, an internal terminal, and an external terminal, the internal electrode body being sealed by the electrode caps at both open ends of the battery case. At least one of the electrode caps has a pressure release hole in a position corresponding with the center axis of the winding core.Type: GrantFiled: March 28, 2001Date of Patent: March 15, 2005Assignee: NGK Insulators, Ltd.Inventors: Akio Enomoto, Kenji Kawamura, Kenshin Kitoh, Toshihiro Yoshida
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Publication number: 20050022369Abstract: A lithium secondary battery includes an electrode body obtained by winding or laminating a positive electrode and a negative electrode via a separator, and a non-aqueous electrolytic solution containing a lithium compound as the electrolyte. The non-aqueous electrolytic solution contains water (H2O) and hydrofluoric acid (HF) in a total concentration of 10,000 ppm or less. Owing to the restriction of the total concentration of water and hydrofluoric acid contained in the non-aqueous electrolytic solution, the lithium secondary battery can suppress the deterioration of battery properties caused by the water and hydrofluoric acid and has excellent cycle property and reliability.Type: ApplicationFiled: August 26, 2004Publication date: February 3, 2005Applicant: NGK Insulators, Ltd.Inventors: Li Yang, Toshihiro Yoshida, Hiroshi Nemoto