Patents by Inventor Takehiko Suwa
Takehiko Suwa 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: 20210384503Abstract: The present invention relates to a lithium transition metal composite oxide capable of being used as a positive electrode (cathode) active material for non-aqueous electrolyte lithium secondary batteries having a general formula Li1+a(1?x?y?z)M1xM2yM3(1?a)(1?x?y?z)M3?a(1?x?y?z)M4zO2+a(1?x?y?z), in which 0.7?x<1, y=(1?x)/2, 0?z?0.05 and 0<a(1?x?y?z)?0.05, and where M1 is Ni having an oxidation state of three, M2 is one or more metal cations having an oxidation state of three, M3? and M3 are identically one or more metal cations with at least one ion being Mn, wherein the one or more metal cations M3 have an oxidation state of four and the one or more metal cations M3 have an oxidation state of three, and M4 is one or more metal cations selected from of Mg, Al and B. Further, the present invention relates and a method for preparing the lithium transition metal composite oxide and to a non-aqueous electrolyte lithium secondary battery containing the lithium transition metal composite oxide.Type: ApplicationFiled: October 10, 2019Publication date: December 9, 2021Inventors: Yasuo ANNO, Kazuhiko KIKUYA, Takehiko SUWA, Tetsuya MAKINO, Koki INOUE, Takuma SAKAMOTO, Young Chul CHANG, Seung Joon LEE, Su Jin YOON, Ju Yong KIM, Hwamyung JANG
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Patent number: 8216724Abstract: A polymer electrolyte capable of obtaining superior discharge characteristics and a battery using it are provided. A cathode (21) and an anode (22) are wound with a separator (24) in between. After that, the wound body is contained inside a package member. Then, an electrolytic composition containing a solvent, polyvinyl acetal or the derivative thereof, and lithium hexafluorophosphate is added thereto. Polyvinyl acetal or the derivative thereof is polymerized by using lithium hexafluorophosphate as a catalyst. Thereby, a polymer electrolyte (23) is formed, and the discharge characteristics are improved.Type: GrantFiled: March 10, 2006Date of Patent: July 10, 2012Assignee: Sony CorporationInventors: Yuji Uchida, Takahiro Endo, Tomoyuki Nakamura, Takeru Yamamoto, Takehiko Suwa, Yoshiaki Naruse
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Patent number: 8092937Abstract: A battery pack includes a non-aqueous electrolyte secondary battery, a rigid covering member, and a protection circuit board. The secondary battery includes a battery element and a flexible covering member formed of a first laminated film composed of a first heat-bonding layer, a first metal layer, and a first outer covering layer laminated successively. The flexible covering member is sealed along around the battery element while leaving electrode terminals of the positive and negative electrodes extended outside the battery element. The rigid covering member is formed of a second laminated film composed of a second heat-bonding layer, a second metal layer, and a second outer covering layer laminated successively. The flexible covering member and the rigid covering member are bonded with an adhesive strength equal to or higher than atmospheric pressure and with a peel strength equal to or lower than a breaking strength of the flexible covering member.Type: GrantFiled: April 10, 2008Date of Patent: January 10, 2012Assignee: Sony CorporationInventors: Kazuhito Hatta, Masato Sato, Hiroyuki Yamada, Takehiko Suwa, Toshio Koishikawa
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Patent number: 7955731Abstract: A nonaqueous electrolyte secondary cell includes an electrode body including a positive electrode, a negative electrode, and a separator, the positive electrode and the negative electrode being arranged to oppose each other with the separator therebetween, and being rolled or stacked; a nonaqueous electrolyte solution; and an exterior package for accommodating the electrode body and the nonaqueous electrolyte solution. A polymeric support is provided between the separator and at least one of the positive electrode and the negative electrode, and the ratio (MO/MA) of the amount (MO) of the nonaqueous electrolyte solution present between the electrode body and the exterior package to the amount (MA) of the nonaqueous electrolyte solution present in the exterior package is 0.04 or less.Type: GrantFiled: August 8, 2007Date of Patent: June 7, 2011Assignee: Sony CorporationInventors: Tomoyuki Nakamura, Yuji Uchida, Takehiko Suwa, Hirotaka Sakai, Takahiro Endo
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Patent number: 7919208Abstract: A battery capable of obtaining a high capacity and reducing its expansion is provided. A spirally wound electrode body formed through laminating a cathode and an anode with a separator and an electrolyte in between to form a laminate and spirally winding the laminate is included in a package member made of an aluminum laminate film. An anode active material layer includes an agglomerated graphite material in which a plurality of primary particles made of graphite having fine pores are agglomerated so that the orientation planes thereof are not parallel to each other, at least in part, to form secondary particles. In the agglomerated graphite material, the total volume of fine pores with a diameter from 10 nm to 1×105 nm inclusive estimated by mercury porosimetry ranges from 0.5 cm3/g to 1.5 cm3/g inclusive per unit weight.Type: GrantFiled: October 26, 2006Date of Patent: April 5, 2011Assignee: Sony CorporationInventors: Takeru Yamamoto, Tomoyuki Nakamura, Yuji Uchida, Yukifumi Takeda, Takehiko Suwa, Gentaro Kano, Takahiro Endo
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Patent number: 7709114Abstract: A battery pack includes a non-aqueous electrolyte secondary battery, a rigid covering member, and a protection circuit board. The secondary battery includes a battery element and a flexible covering member formed of a first laminated film composed of a first heat-bonding layer, a first metal layer, and a first outer covering layer which are laminated successively. The flexible covering material is sealed along around the battery element while leaving electrode terminals of the positive and negative electrodes extended outside the battery element. The rigid covering member covers the non-aqueous electrolyte secondary battery together with the flexible covering member, and is formed of a second laminated film composed of a second heat-bonding layer, a second metal layer, and a second outer covering layer which are laminated successively. The flexible covering member and the rigid covering member are bonded by melting the second heat-bonding layer without melting the first outer covering layer.Type: GrantFiled: April 10, 2008Date of Patent: May 4, 2010Assignee: Sony CorporationInventors: Kazuhito Hatta, Masato Sato, Hiroyuki Yamada, Takehiko Suwa, Toshio Koishikawa
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Publication number: 20090202918Abstract: A polymer electrolyte capable of obtaining superior discharge characteristics and a battery using it are provided. A cathode (21) and an anode (22) are wound with a separator (24) in between. After that, the wound body is contained inside a package member. Then, an electrolytic composition containing a solvent, polyvinyl acetal or the derivative thereof, and lithium hexafluorophosphate is added thereto. Polyvinyl acetal or the derivative thereof is polymerized by using lithium hexafluorophosphate as a catalyst. Thereby, a polymer electrolyte (23) is formed, and the discharge characteristics are improved.Type: ApplicationFiled: March 10, 2006Publication date: August 13, 2009Applicant: SONY CORPORATIONInventors: Yuji Uchida, Takahiro Endo, Tomoyuki Nakamura, Takeru Yamamoto, Takehiko Suwa, Yoshiaki Naruse
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Publication number: 20090098416Abstract: A battery pack includes a non-aqueous electrolyte secondary battery, a rigid covering member, and a protection circuit board. The secondary battery includes a battery element and a flexible covering member formed of a first laminated film composed of a first heat-bonding layer, a first metal layer, and a first outer covering layer which are laminated successively. The flexible covering material is sealed along around the battery element while leaving electrode terminals of the positive and negative electrodes extended outside the battery element. The rigid covering member covers the non-aqueous electrolyte secondary battery together with the flexible covering member, and is formed of a second laminated film composed of a second heat-bonding layer, a second metal layer, and a second outer covering layer which are laminated successively. The flexible covering member and the rigid covering member are bonded by melting the second heat-bonding layer without melting the first outer covering layer.Type: ApplicationFiled: April 10, 2008Publication date: April 16, 2009Applicant: SONY CORPORATIONInventors: Kazuhito Hatta, Masato Sato, Hiroyuki Yamada, Takehiko Suwa, Toshio Koishikawa
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Publication number: 20080254348Abstract: A battery pack includes a non-aqueous electrolyte secondary battery, a rigid covering member, and a protection circuit board. The secondary battery includes a battery element and a flexible covering member formed of a first laminated film composed of a first heat-bonding layer, a first metal layer, and a first outer covering layer laminated successively. The flexible covering member is sealed along around the battery element while leaving electrode terminals of the positive and negative electrodes extended outside the battery element. The rigid covering member is formed of a second laminated film composed of a second heat-bonding layer, a second metal layer, and a second outer covering layer laminated successively. The flexible covering member and the rigid covering member are bonded with an adhesive strength equal to or higher than atmospheric pressure and with a peel strength equal to or lower than a breaking strength of the flexible covering member.Type: ApplicationFiled: April 10, 2008Publication date: October 16, 2008Applicant: SONY CORPORATIONInventors: Kazuhito Hatta, Masato Sato, Hiroyuki Yamada, Takehiko Suwa, Toshio Koishikawa
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Publication number: 20080138702Abstract: A nonaqueous electrolyte secondary cell includes an electrode body including a positive electrode, a negative electrode, and a separator, the positive electrode and the negative electrode being arranged to oppose each other with the separator therebetween, and being rolled or stacked; a nonaqueous electrolyte solution; and an exterior package for accommodating the electrode body and the nonaqueous electrolyte solution. A polymeric support is provided between the separator and at least one of the positive electrode and the negative electrode, and the ratio (MO/MA) of the amount (MO) of the nonaqueous electrolyte solution present between the electrode body and the exterior package to the amount (MA) of the nonaqueous electrolyte solution present in the exterior package is 0.04 or less.Type: ApplicationFiled: August 8, 2007Publication date: June 12, 2008Applicant: SONY CORPORATIONInventors: Tomoyuki Nakamura, Yuji Uchida, Takehiko Suwa, Hirotaka Sakai, Takahiro Endo
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Publication number: 20070117015Abstract: A battery capable of obtaining a high capacity and reducing its expansion is provided. A spirally wound electrode body formed through laminating a cathode and an anode with a separator and an electrolyte in between to form a laminate and spirally winding the laminate is included in a package member made of an aluminum laminate film. An anode active material layer includes an agglomerated graphite material in which a plurality of primary particles made of graphite having fine pores are agglomerated so that the orientation planes thereof are not parallel to each other, at least in part, to form secondary particles. In the agglomerated graphite material, the total volume of fine pores with a diameter from 10 nm to 1×105 nm inclusive estimated by mercury porosimetry ranges from 0.5 cm3/g to 1.5 cm3/g inclusive per unit weight.Type: ApplicationFiled: October 26, 2006Publication date: May 24, 2007Applicant: Sony CorporationInventors: Takeru Yamamoto, Tomoyuki Nakamura, Yuji Uchida, Yukifumi Takeda, Takehiko Suwa, Gentaro Kano, Takahiro Endo
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Publication number: 20020149121Abstract: A semiconductor device includes a base interconnection substrate having an interconnect portion, an IC chip mounted on the base interconnection substrate, and a mold resin portion encapsulating the IC chip. The base interconnection substrate includes an electrode pad for external connection that is connected to the interconnect portion, and a reinforcing pad for preventing the base interconnection substrate from deforming in a transfer mold process.Type: ApplicationFiled: August 27, 2001Publication date: October 17, 2002Applicant: Mitsubishi Denki Kabushiki kaishaInventors: Taketoshi Shikano, Namiki Moriga, Takehiko Suwa