Patents by Inventor Tomoyo Ooyama

Tomoyo Ooyama 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: 9825337
    Abstract: A battery is composed of a positive electrode in which a positive electrode active material layer including a positive electrode active material is formed on a positive electrode collector, a negative electrode in which a negative electrode active material layer including a negative electrode active material is formed on a negative electrode collector, a separator provided between the positive electrode and the negative electrode, and an electrolyte impregnated in the separator. The battery further includes at least one of a heteropoly acid and a heteropoly acid compound as an additive at least in one of the positive electrode, the negative electrode, the separator, and the electrolyte.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: November 21, 2017
    Assignee: Sony Corporation
    Inventors: Haruo Watanabe, Tomoyo Ooyama, Shunsuke Saito, Shinichi Katayama, Hideki Nakai, Yoshihiro Kudo, Yoshikazu Kato, Muneaki Ando, Koji Morita, Ichiro Yamada, Nobuya Okano, Noritoshi Araki, Shuhei Sugita, Kunihiko Hayashi, Yosuke Hosoya, Tadahiko Kubota, Shigeru Fujita
  • Patent number: 9583759
    Abstract: A cathode active material capable of obtaining a high capacity and capable of improving stability or low-temperature characteristics, a method of manufacturing the same, and a battery are provided. A cathode (21) includes a cathode active material including a lithium complex oxide including Li and at least one kind selected from the group consisting of Co, Ni and Mn, and P and at least one kind selected from the group consisting of Ni, Co, Mn, Fe, Al, Mg and Zn as coating elements on a surface of the lithium complex oxide. Preferably, the contents of the coating elements are higher on the surface of the cathode active material than those in the interior thereof, and decrease from the surface to the interior.
    Type: Grant
    Filed: May 2, 2013
    Date of Patent: February 28, 2017
    Assignee: Sony Corporation
    Inventors: Guohua Li, Nozomu Morita, Tomoyo Ooyama, Kiyohiko Suzuki, Kotaro Satori, Hideto Azuma, Yosuke Hosoya, Koji Morita, Haruo Watanabe
  • Patent number: 9190662
    Abstract: A cathode active material capable of increasing a capacity and improving high temperature characteristics or cycle characteristics, a method of manufacturing it, a cathode using the cathode active material, and a battery using the cathode active material are provided. In a cathode active material contained in a cathode, a coating layer is provided on at least part of complex oxide particle containing at least lithium (Li) and cobalt (Co). The coating layer is an oxide which contains lithium (Li) and at least one of nickel (Ni) and manganese (Mn).
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: November 17, 2015
    Assignee: SONY CORPORATION
    Inventors: Haruo Watanabe, Kenji Ogisu, Koji Morita, Masanori Soma, Yosuke Hosoya, Hideto Azuma, Tomoyo Ooyama
  • Patent number: 9054374
    Abstract: A cathode active material capable of obtaining a high capacity and capable of improving stability or low-temperature characteristics, a method of manufacturing the same, and a battery are provided. A cathode (21) includes a cathode active material including a lithium complex oxide including Li and at least one kind selected from the group consisting of Co, Ni and Mn, and P and at least one kind selected from the group consisting of Ni, Co, Mn, Fe, Al, Mg and Zn as coating elements on a surface of the lithium complex oxide. Preferably, the contents of the coating elements are higher on the surface of the cathode active material than those in the interior thereof, and decrease from the surface to the interior.
    Type: Grant
    Filed: May 11, 2006
    Date of Patent: June 9, 2015
    Assignee: Sony Corporation
    Inventors: Guohua Li, Nozomu Morita, Tomoyo Ooyama, Kiyohiko Suzuki, Kotaro Satori, Hideto Azuma, Yosuke Hosoya, Koji Morita, Haruo Watanabe
  • Publication number: 20150099181
    Abstract: A cathode active material is provided. The cathode active material includes: a composite oxide particle including at least lithium and cobalt; a coating layer which is provided in at least a part of the composite oxide particle and includes an oxide including lithium and a coating element of at least one of nickel and manganese; and a surface layer which is provided in at least a part of the coating layer and includes at least one element selected from the group consisting of silicon, tin, phosphorus, magnesium, boron, zinc, tungsten, aluminum, titanium, and zirconium.
    Type: Application
    Filed: December 12, 2014
    Publication date: April 9, 2015
    Inventors: Haruo WATANABE, Tomoyo OOYAMA, Masanori SOMA, Kenji OGISU
  • Patent number: 8911903
    Abstract: A cathode active material is provided. The cathode active material includes: a composite oxide particle including at least lithium and cobalt; a coating layer which is provided in at least a part of the composite oxide particle and includes an oxide including lithium and a coating element of at least one of nickel and manganese; and a surface layer which is provided in at least a part of the coating layer and includes at least one element selected from the group consisting of silicon, tin, phosphorus, magnesium, boron, zinc, tungsten, aluminum, titanium, and zirconium.
    Type: Grant
    Filed: July 2, 2007
    Date of Patent: December 16, 2014
    Assignee: Sony Corporation
    Inventors: Haruo Watanabe, Tomoyo Ooyama, Masanori Soma, Kenji Ogisu
  • Patent number: 8841025
    Abstract: A positive electrode for a nonaqueous electrolyte battery includes a collector, and a positive electrode active material layer. The positive electrode active material layer includes a positive electrode active material, and also includes a heteropoly acid and/or heteropoly acid compound and phosphorous acid as additives.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: September 23, 2014
    Assignee: Sony Corporation
    Inventors: Haruo Watanabe, Tomoyo Ooyama, Shunsuke Saito, Yosuke Hosoya, Shigeru Fujita
  • Patent number: 8790827
    Abstract: A positive electrode active material includes: a secondary particle obtained upon aggregation of a primary particle that is a lithium complex oxide particle in which at least nickel (Ni) and cobalt (Co) are solid-solved as transition metals, wherein an average composition of the whole of the secondary particle is represented by the following formula (1): LixCoyNizM1-y-zOb-aXa ??Formula (1) wherein an existent amount of cobalt (Co) becomes large from a center of the primary particle toward the surface thereof; and an existent amount of cobalt (Co) in the primary particle existing in the vicinity of the surface of the secondary particle is larger than an existent amount of cobalt (Co) in the primary particle existing in the vicinity of the center of the secondary particle.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: July 29, 2014
    Assignee: Sony Corporation
    Inventors: Asuki Yanagihara, Tomoyo Ooyama, Yoshihiro Kudo, Guohua Li
  • Patent number: 8771876
    Abstract: A positive electrode active material includes a lithium complex oxide particle, and a coating layer formed on at least a part of the surface of the lithium complex oxide particle. The lithium complex oxide particle is a lithium complex oxide particle composed mainly of nickel. The coating layer contains an oxo acid and/or an oxo acid compound, an acidity of the surface of the lithium complex oxide particle composed mainly of nickel is increased by the coating layer. The acidity is determined based on a pH of a supernatant of water in a state where after 1.0 part by weight of the lithium complex oxide particle composed mainly of nickel and having a coating layer formed thereon is dispersed in 50 parts by weight of water. The lithium complex oxide particle sediments, and the pH is less than 8.0.
    Type: Grant
    Filed: April 15, 2010
    Date of Patent: July 8, 2014
    Assignee: Sony Corporation
    Inventors: Haruo Watanabe, Tomoyo Ooyama, Yosuke Hosoya, Shigeru Fujita
  • Publication number: 20140162124
    Abstract: A cathode active material capable of increasing a capacity and improving high temperature characteristics or cycle characteristics, a method of manufacturing it, a cathode using the cathode active material, and a battery using the cathode active material are provided. In a cathode active material contained in a cathode, a coating layer is provided on at least part of complex oxide particle containing at least lithium (Li) and cobalt (Co). The coating layer is an oxide which contains lithium (Li) and at least one of nickel (Ni) and manganese (Mn).
    Type: Application
    Filed: February 14, 2014
    Publication date: June 12, 2014
    Applicant: Sony Corporation
    Inventors: Haruo Watanabe, Kenji Ogisu, Koji Morita, Masanori Soma, Yosuke Hosoya, Hideto Azuma, Tomoyo Ooyama
  • Patent number: 8748042
    Abstract: A cathode active material capable of increasing a capacity and improving high temperature characteristics or cycle characteristics, a method of manufacturing it, a cathode using the cathode active material, and a battery using the cathode active material are provided. In a cathode active material contained in a cathode, a coating layer is provided on at least part of complex oxide particle containing at least lithium (Li) and cobalt (Co). The coating layer is an oxide which contains lithium (Li) and at least one of nickel (Ni) and manganese (Mn).
    Type: Grant
    Filed: April 19, 2013
    Date of Patent: June 10, 2014
    Assignee: Sony Corporation
    Inventors: Haruo Watanabe, Kenji Ogisu, Koji Morita, Masanori Soma, Yosuke Hosoya, Hideto Azuma, Tomoyo Ooyama
  • Patent number: 8652577
    Abstract: A method of manufacturing a cathode active material is provided. The method includes the step of precipitating step for providing a solution of a deposition component onto composite oxide particles including lithium Li and nickel Ni, removing a solvent from the solution on the composite oxide particles within a short time period, and precipitating the deposition component on surfaces of the composite oxide particles; and heating step for heating under an oxidation atmosphere the composite oxide particles with the deposition component precipitated on the surfaces.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: February 18, 2014
    Assignee: Sony Corporation
    Inventors: Haruo Watanabe, Tomoyo Ooyama, Hideto Azuma, Shigeru Fujita
  • Patent number: 8647772
    Abstract: A cathode active material has: a lithium composite oxide which contains the highest proportion of nickel among constituent metal elements except lithium; and a phosphorus compound which is contained near the surface of the lithium composite oxide, and a cathode including the cathode active material.
    Type: Grant
    Filed: March 27, 2012
    Date of Patent: February 11, 2014
    Assignee: Sony Corporation
    Inventors: Tomoyo Ooyama, Yukifumi Takeda, Masanori Soma, Hideki Nakai
  • Publication number: 20130244113
    Abstract: A cathode active material capable of obtaining a high capacity and capable of improving stability or low-temperature characteristics, a method of manufacturing the same, and a battery are provided. A cathode (21) includes a cathode active material including a lithium complex oxide including Li and at least one kind selected from the group consisting of Co, Ni and Mn, and P and at least one kind selected from the group consisting of Ni, Co, Mn, Fe, Al, Mg and Zn as coating elements on a surface of the lithium complex oxide. Preferably, the contents of the coating elements are higher on the surface of the cathode active material than those in the interior thereof, and decrease from the surface to the interior.
    Type: Application
    Filed: May 2, 2013
    Publication date: September 19, 2013
    Applicant: Sony Corporation
    Inventors: Guohua Li, Nozomu Morita, Tomoyo Ooyama, Kiyohiko Suzuki, Kotaro Satori, Hideto Azuma, Yosuke Hosoya, Koji Morita, Haruo Watanabe
  • Publication number: 20130230776
    Abstract: A cathode active material capable of increasing a capacity and improving high temperature characteristics or cycle characteristics, a method of manufacturing it, a cathode using the cathode active material, and a battery using the cathode active material are provided. In a cathode active material contained in a cathode, a coating layer is provided on at least part of complex oxide particle containing at least lithium (Li) and cobalt (Co). The coating layer is an oxide which contains lithium (Li) and at least one of nickel (Ni) and manganese (Mn).
    Type: Application
    Filed: April 19, 2013
    Publication date: September 5, 2013
    Applicant: Sony Corporation
    Inventors: Haruo Watanabe, Kenji Ogisu, Koji Morita, Masanori Soma, Yosuke Hosoya, Hideto Azuma, Tomoyo Ooyama
  • Patent number: 8445129
    Abstract: A cathode active material capable of increasing a capacity and improving high temperature characteristics or cycle characteristics, a method of manufacturing it, a cathode using the cathode active material, and a battery using the cathode active material are provided. In a cathode active material contained in a cathode, a coating layer is provided on at least part of a complex oxide particle containing at least lithium (Li) and cobalt (Co). The coating layer is an oxide which contains lithium (Li) and at least one of nickel (Ni) and manganese (Mn).
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: May 21, 2013
    Assignee: Sony Corporation
    Inventors: Haruo Watanabe, Kenji Ogisu, Koji Morita, Masanori Soma, Yosuke Hosoya, Hideto Azuma, Tomoyo Ooyama
  • Publication number: 20120321911
    Abstract: A battery is composed of a positive electrode in which a positive electrode active material layer including a positive electrode active material is formed on a positive electrode collector, a negative electrode in which a negative electrode active material layer including a negative electrode active material is formed on a negative electrode collector, a separator provided between the positive electrode and the negative electrode, and an electrolyte impregnated in the separator. The battery further includes at least one of a heteropoly acid and a heteropoly acid compound as an additive at least in one of the positive electrode, the negative electrode, the separator, and the electrolyte.
    Type: Application
    Filed: June 17, 2010
    Publication date: December 20, 2012
    Applicant: SONY CORPORATION
    Inventors: Haruo Watanabe, Tomoyo Ooyama, Shunsuke Saito, Shinichi Katayama, Hideki Nakai, Yoshihiro Kudo, Yoshikazu Kato, Muneaki Ando, Koji Morita, Ichiro Yamada, Nobuya Okano, Noritoshi Araki, Shuhei Sugita, Kunihiko Hayashi, Yosuke Hosoya, Tadahiko Fujita, Shigeru Fujita
  • Patent number: 8262747
    Abstract: A cathode active material has: a lithium composite oxide which contains the highest proportion of nickel among constituent metal elements except lithium; and a phosphorus compound which is contained near the surface of the lithium composite oxide, a cathode including the cathode active material, and a method for manufacturing the cathode.
    Type: Grant
    Filed: March 31, 2008
    Date of Patent: September 11, 2012
    Assignee: Sony Corporation
    Inventors: Tomoyo Ooyama, Yukifumi Takeda, Masanori Soma, Hideki Nakai
  • Publication number: 20120189891
    Abstract: A cathode active material has: a lithium composite oxide which contains the highest proportion of nickel among constituent metal elements except lithium; and a phosphorus compound which is contained near the surface of the lithium composite oxide, and a cathode including the cathode active material.
    Type: Application
    Filed: March 27, 2012
    Publication date: July 26, 2012
    Applicant: SONY CORPORATION
    Inventors: Tomoyo Ooyama, Yukifumi Takeda, Masanori Soma, Hideki Nakai
  • Publication number: 20120009474
    Abstract: A positive electrode active material includes: a secondary particle obtained upon aggregation of a primary particle that is a lithium complex oxide particle in which at least nickel (Ni) and cobalt (Co) are solid-solved as transition metals, wherein an average composition of the whole of the secondary particle is represented by the following formula (1): LixCoyNizM1-y-zOb-aXa ??Formula (1) wherein an existent amount of cobalt (Co) becomes large from a center of the primary particle toward the surface thereof; and an existent amount of cobalt (Co) in the primary particle existing in the vicinity of the surface of the secondary particle is larger than an existent amount of cobalt (Co) in the primary particle existing in the vicinity of the center of the secondary particle.
    Type: Application
    Filed: June 10, 2011
    Publication date: January 12, 2012
    Applicant: SONY CORPORATION
    Inventors: Asuki Yanagihara, Tomoyo Ooyama, Yoshihiro Kudo, Guohua Li