Patents by Inventor Seiji Yoshimura

Seiji Yoshimura 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).

  • Publication number: 20040038130
    Abstract: A lithium secondary battery including a positive electrode which is capable of occluding and releasing lithium, a negative electrode which is capable of occluding and releasing lithium, a separator between the positive electrode and the negative electrode, and a nonaqueous electrolyte comprising a nonaqueous solvent and a wettability improving agent. The nonaqueous solvent does not substantially wet the separator, and the wettability improving agent is dissolved in the nonaqueous solvent, improves the wettability of the nonaqueous solvent to the separator, and has an oxidative decomposition potential in a range of 4.5 V to 6.2 V.
    Type: Application
    Filed: August 25, 2003
    Publication date: February 26, 2004
    Inventors: Naoki Imachi, Seiji Yoshimura
  • Patent number: 6696200
    Abstract: A lithium battery comprising a positive electrode, a negative electrode, and a nonaqueous electrolyte containing a lithium trifluoromethanesulfonimide solute and a solvent, wherein the positive electrode comprises a positive-electrode active material of boron-containing lithium-manganese complex oxide with a specific surface area of 12 to 45 m2/g.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: February 24, 2004
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Taeko Ota, Shin Fujitani
  • Publication number: 20040023117
    Abstract: A nonaqueous electrolyte battery includes a positive electrode containing a positive electrode active material which is capable of occluding and releasing lithium, a negative electrode containing a main active material which is capable of occluding and releasing lithium, and a current collector of copper, wherein the negative electrode contains a subsidiary active material which supplies lithium from the negative electrode to the positive electrode at an overdischarge condition. This arrangement makes it possible to prevent deterioration of battery characteristics caused by overdischarge without using an external device such as a protective element or protective circuit.
    Type: Application
    Filed: July 28, 2003
    Publication date: February 5, 2004
    Inventors: Naoki Imachi, Seiji Yoshimura, Shin Fujitani
  • Publication number: 20030162100
    Abstract: A lithium secondary battery to be mounted on a substrate including a positive electrode, a negative electrode containing an alloy of lithium and aluminum, and a non-aqueous electrolyte containing a solute and a solvent; wherein the solvent contains propylene carbonate and diethylene glycol dialkyl ether. More preferably, the solvent also contains trialkyl phosphate.
    Type: Application
    Filed: February 21, 2003
    Publication date: August 28, 2003
    Inventors: Yasufumi Takahashi, Seiji Yoshimura, Maruo Kamino
  • Publication number: 20030158537
    Abstract: The present invention provides an infusion vessel, which is capable of separately containing a drug and a infusion liquid in a sterile manner and mixing the drug with the infusion liquid in a sterile manner by a simple operation for use, while ensuring the sterility of a connector thereof. The infusion vessel according to the present invention comprises a bag (2) for containing a infusion liquid, a two-mouth vial (3) for containing a drug, and a joint (4) connecting the bag and the vial. A lower mouth portion (33) of the vial (3) is sealed with a rubber plug (7). The joint (4) is air-tightly connected to a liquid outlet port (21) provided in a bottom portion of the bag (2), and extends downward. The joint (4) has an opening (46) for communication between the inside and the outside thereof. An O-ring (6) and an intermediate rubber plug (5) are respectively attached to the joint (4) above and below the opening (46), and fitted in the upper mouth portion (32) of the vial (3) in an axially movable manner.
    Type: Application
    Filed: February 19, 2003
    Publication date: August 21, 2003
    Applicant: Taisei Kako Co., Ltd.
    Inventors: Yasuyuki Shiraishi, Keiji Hamamoto, Seiji Yoshimura
  • Publication number: 20030138700
    Abstract: A lithium primary battery contains a positive electrode and a negative electrode, wherein the positive electrode comprises manganese dioxide containing boron and phosphorus and the negative electrode comprises lithium or lithium alloy.
    Type: Application
    Filed: January 24, 2003
    Publication date: July 24, 2003
    Inventors: Seiji Yoshimura, Takashi Okamoto, Maruo Kamino
  • Patent number: 6589697
    Abstract: A rechargeable lithium battery includes a lithium-aluminum-manganese alloy negative electrode containing lithium as active material, a positive electrode, and a nonaqueous liquid electrolyte containing a solvent, a solute and at least one additive selected from trialkyl phosphite, trialkyl phosphate, trialkyl borate, dialkyl sulfate and dialkyl sulfite.
    Type: Grant
    Filed: March 9, 2001
    Date of Patent: July 8, 2003
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Takashi Okamoto, Shin Fujitani
  • Publication number: 20030105448
    Abstract: An infusion vessel has a vessel body having an internal cavity to serve as an infusion medium space, a cylindrical discharge mouth continuing from a lower portion of the vessel body, a medicine chamber disposed in the discharge mouth and kept airtight against ambient air, and a separator intervening between the infusion medium space and the medicine chamber so as to keep the space in a liquid-tight state against the holder. The separator is subject to displacement, rotation or deformation such as to bring the infusion medium space into communication with the medicine chamber, so that the infusion vessel can be made ready for use by conducting a simple operation to mix the medicine with the infusion medium that have been separated from each other within the vessel during its normal state before use.
    Type: Application
    Filed: December 2, 2002
    Publication date: June 5, 2003
    Inventors: Yasuyuki Shiraishi, Keiji Hamamoto, Masaharu Nakao, Makoto Kuroki, Seiji Yoshimura
  • Patent number: 6509120
    Abstract: A lithium battery comprising a positive electrode comprising a positive-electrode active material of boron-containing lithium-manganese complex oxide, a negative electrode and a nonaqueous electrolyte containing a solute and a solvent, the positive-electrode active material is the boron-containing lithium-manganese complex oxide having a boron-to-manganese atomic ratio (B/Mn) in the range of 0.01 to 0.20 and a predischarge mean manganese valence of not less than 3.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: January 21, 2003
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Taeko Ota, Shin Fujitani, Nobuhiro Nishiguchi
  • Publication number: 20020192559
    Abstract: A first lithium secondary battery of the present invention is formed by placing at least a positive electrode, a negative electrode, and a non-aqueous electrolyte in a battery case in which a positive electrode connecting member to which the positive electrode is connected and a negative electrode connecting member to which the negative electrode is connected are electrically separated, wherein said positive electrode connecting member is composed of clad material comprising one of aluminum or aluminum alloy and one of austenitic stainless steel or ferrite stainless steel, and the aluminum or aluminum alloy in the clad material is in the positive electrode side.
    Type: Application
    Filed: January 9, 2002
    Publication date: December 19, 2002
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Hiroshi Nakajima, Maruo Kamino
  • Publication number: 20020172864
    Abstract: In a lithium battery comprising a positive electrode for which manganese dioxide is employed, manganese dioxide containing 0.1 to 3% by weight of boron is employed as the positive electrode and a lithium alloy containing 0.05 to 2% by weight of aluminum is employed as the negative electrode.
    Type: Application
    Filed: March 1, 2002
    Publication date: November 21, 2002
    Applicant: SANYO ELECTRIC CO., LTD.
    Inventors: Seiji Yoshimura, Hiroshi Nakajima, Maruo Kamino
  • Patent number: 6482549
    Abstract: A rechargeable lithium battery includes a negative electrode containing lithium as an active material, a positive electrode containing a lithium-manganese complex oxide as an active material and a nonaqueous liquid electrolyte containing a solvent, a solute and trialkyl phosphite.
    Type: Grant
    Filed: February 27, 2001
    Date of Patent: November 19, 2002
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Takashi Okamoto, Shin Fujitani
  • Publication number: 20020169326
    Abstract: The present invention relates to a novel fatty acid derivative of the following formula: 1
    Type: Application
    Filed: May 6, 2002
    Publication date: November 14, 2002
    Applicant: FUJISAWA PHARMACEUTICAL COMPANY, LTD.
    Inventors: Naoki Fukami, Seiji Yoshimura, Keisuke Imai, Keiji Hemmi, Mitsue Hemmi, Keiichiro Hemmi, Yusuke Hemmi
  • Patent number: 6461770
    Abstract: A lithium battery comprising a positive electrode, a negative electrode and a nonaqueous electrolyte containing a a solute and a solvent, wherein the positive electrode comprises a positive-electrode active material of lithium-manganese complex oxide containing boron and phosphorus.
    Type: Grant
    Filed: August 1, 2000
    Date of Patent: October 8, 2002
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Taeko Ota, Shin Fujitani, Nobuhiro Nishiguchi
  • Patent number: 6436577
    Abstract: In a non-aqueous electrolyte secondary battery provided with a positive electrode 1, a negative electrode 2, and a non-aqueous electrolyte solution, a lithium-containing composite nickel oxide is used as a chief component of the positive electrode material for the positive electrode, a lithium-containing titanium oxide is used as a chief component of the negative electrode material for the negative electrode, and the solvent of the non-aqueous electrolyte solution contains a cyclic carbonic ester and a chain carbonic ester in such a manner that the cyclic carbonic ester and chain carbonic ester are contained in amounts of not less than 10% by volume of the whole solvent, respectively, and the total content of the cyclic carbonic ester and the chain carbonic ester is not less than 60% by volume of the whole solvent.
    Type: Grant
    Filed: August 26, 1999
    Date of Patent: August 20, 2002
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Yoshinori Kida, Ryuji Ohshita, Seiji Yoshimura, Toshiyuki Nohma, Koji Nishio
  • Publication number: 20020081495
    Abstract: A nonaqueous electrolyte secondary battery comprising: a positive electrode composed of a metal oxide; a negative electrode composed of carbon material capable of electrochemically absorbing and desorbing lithium; and a nonaqueous electrolyte, wherein LiCo1-aTiaO2 (0.003≦a≦0.015) is used as positive active material.
    Type: Application
    Filed: November 5, 2001
    Publication date: June 27, 2002
    Inventors: Hiroshi Nakajima, Seiji Yoshimura, Maruo Kamino
  • Patent number: 6403258
    Abstract: In a lithium secondary battery provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte, a tungsten oxide W20O58 or W18O49, or the tungsten oxide to which lithium is added, or a tungsten composite oxide comprising a tungsten oxide containing at least one type of metal element selected from the group consisting of Mn, Cu, V, Cr, Fe, Co, and Ni and having a W20O58-type or W18O49-type crystal structure or the tungsten composite oxide to which lithium is added is used as a positive electrode active material for said positive electrode or a negative electrode active material for said negative electrode.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: June 11, 2002
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Masahisa Fujimoto, Shin Fujitani
  • Patent number: 6383685
    Abstract: In a lithium secondary battery provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte, a composite oxide represented by a chemical formula MXW1−XOY (wherein M denotes at least one type of metal element selected from the group consisting of Cu, V, Cr, Mn, Fe, Co, and Ni; and the conditions of 0<X≦0.46 and 1.5≦Y≦2.5 are satisfied) and having a rutile-type crystal structure or the composite oxide to which lithium is added is used as a positive electrode active material for said positive electrode or a negative electrode active material for said negative electrode.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: May 7, 2002
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Masahisa Fujimoto, Shin Fujitani
  • Patent number: 6383684
    Abstract: In a lithium secondary battery provided with a positive electrode, a negative electrode, and a non-aqueous electrolyte, a composite oxide represented by a chemical formula MXW1-XOY (wherein M denotes at least one type of metal element selected from the group consisting of Cu, V, Cr, Mn, Fe, Co, and Ni; and the conditions of 0<X<0.46 and 2.5≦Y≦3.5 are satisfied) and having a monoclinic crystal structure or the composite oxide to which lithium is added is used as a positive electrode active material for said positive electrode or a negative electrode active material for said negative electrode.
    Type: Grant
    Filed: March 23, 2000
    Date of Patent: May 7, 2002
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Masahisa Fujimoto, Shin Fujitani
  • Publication number: 20020051910
    Abstract: A lithium battery employs for a battery separator and a battery insulating packing and the like a battery polymeric material comprising repeating units wherein p-phenylene is combined with one type of group selected from the group composed of oxygen, a methylene group, an isopropylidene group, a carbonyl group, a carbonyldioxy group, a carboxylic acid anhydride group, an amide group, an ureylene group and a sulfonyl group, or a polymeric material comprising at least two types of repeating units wherein p-phenylene is combined with one type of group selected from the group composed of oxygen, a methylene group, an isopropylidene group, a carbonyl group, a carbonyldioxy group, a carboxylic acid anhydride group, an amide group, an ureylene group, a sulfonyl group, sulfur and a carbonyloxy group.
    Type: Application
    Filed: August 23, 2001
    Publication date: May 2, 2002
    Applicant: Sanyo Electric Co., Ltd.
    Inventors: Seiji Yoshimura, Hiroshi Nakajima, Maruo Kamino, Nobuhiro Nishiguchi, Masahiro Imanishi