Patents by Inventor Makoto Aoyama

Makoto Aoyama 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: 20090111688
    Abstract: An object is to maintain an effect of enhancing activity of noble metal particles by transition metal without increasing production cost and an environmental load. An exhaust gas purifying catalyst 1 is composed of: noble metal particles 2; first compounds 3 which contact the noble metal particles 2 and suppress movement of the noble metal particles 2; and second compounds 4 which contain the noble metal particles 2 and the first compounds 3, suppress the movement of the noble metal particles 2, and suppress coagulation of the first compounds 3 following mutual contact of the first compounds 3, wherein the first compounds 3 support the noble metal particles 2, and simplexes or aggregates of the first compounds 3 supporting the noble metal particles 2 are included in section partitioned by the second compounds 4.
    Type: Application
    Filed: October 31, 2006
    Publication date: April 30, 2009
    Inventors: Masanori Nakamura, Katsuo Suga, Hironori Wakamatsu, Kazuyuki Shiratori, Hirofumi Yasuda, Makoto Aoyama, Jun Ikezawa
  • Patent number: 6741451
    Abstract: A solid electrolytic capacitor includes a capacitor element and a resin package enclosing the capacitor element. Two anode leads, partially enclosed by the package, are connected to the opposite ends of the anode bar that are allowed to protrude in the opposite directions from an anode chip of the capacitor element. The capacitor element is provided with a cathode layer connected to an external cathode electrode arranged between the paired anode leads. With this symmetrical structure of two anode leads and one cathode electrode, the solid electrolytic capacitor can be mounted onto a printed circuit board without worrying about the polarity of the capacitor. Further, the proximity of the cathode electrode and the respective anode leads serves to reduce the self-induction in a high-frequency range.
    Type: Grant
    Filed: May 28, 2003
    Date of Patent: May 25, 2004
    Assignee: Rohm Co., Ltd.
    Inventor: Makoto Aoyama
  • Publication number: 20030223180
    Abstract: A solid electrolytic capacitor includes a capacitor element and a resin package enclosing the capacitor element. Two anode leads, partially enclosed by the package, are connected to the opposite ends of the anode bar that are allowed to protrude in the opposite directions from an anode chip of the capacitor element. The capacitor element is provided with a cathode layer connected to an external cathode electrode arranged between the paired anode leads. With this symmetrical structure of two anode leads and one cathode electrode, the solid electrolytic capacitor can be mounted onto a printed circuit board without worrying about the polarity of the capacitor. Further, the proximity of the cathode electrode and the respective anode leads serves to reduce the self-induction in a high-frequency range.
    Type: Application
    Filed: May 28, 2003
    Publication date: December 4, 2003
    Applicant: ROHM CO., LTD.
    Inventor: Makoto Aoyama
  • Patent number: 6518265
    Abstract: 1H-Imidazopyridine derivatives represented by the following general formula or salts thereof: wherein R1 represents hydrogen atom, hydroxyl group, an alkyl group, a cycloalkyl group, styryl group, or an aryl group; R2 represents hydrogen atom, an alkyl group, a halogen atom, hydroxyl group, amino group, a cyclic amino group, or phenoxy group; ring A represents a homocyclic or heterocyclic ring which may be substituted; R3 represents a saturated nitrogen-containing heterocyclic group; and m represents an integer of from 0 to 3. The derivatives have excellent inhibitory actions against production of TNF or IL-1 and are extremely useful as preventive or therapeutic agents for diseases in which a cytokine is mediated.
    Type: Grant
    Filed: May 2, 2001
    Date of Patent: February 11, 2003
    Assignee: Hokuriku Seiyaku Co., Ltd.
    Inventors: Hideo Kato, Jun Sakaguchi, Makoto Aoyama, Tomoyuki Izumi, Ken-ichi Kato
  • Patent number: 6493214
    Abstract: An anode lead (11) is embedded at one end thereof in a sintered body in a capacitor element (1), and is welded at the other end thereof to a first outside lead (2). A cathode (12) is electrically connected to a second outside lead (3). The capacitor element is covered with a resin, thereby forming a resin package (5). The tip end of the first outside lead, to which the other end of the anode lead 11 is welded, is configured in such a manner as to have a capacity greater than those of other portions of the first outside lead: namely, the tip end of the first outside lead is widened or thickened in such a manner as to increase the volume of the first outside lead per unit length. Thus, it is possible to provide a solid electrolytic capacitor having the structure in which inclination of the welded portion of the anode lead can be eliminated or the welding reliability of the anode lead can be enhanced without reducing the size of the sintered body in the capacitor element or increasing the size of the package.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: December 10, 2002
    Assignee: Rohm Co., Ltd.
    Inventors: Yasuo Kanetake, Makoto Aoyama
  • Patent number: 6433417
    Abstract: Electrodes of the electronic component chip is electrically connected with the end parts of the leads and the electronic component chip and the end parts of the leads are covered by the package with the leads which are extended out from the package are bent along the outer wall of the package, and a solder bump of low melting point is held in the gap between the leads and the package. By adopting this structure, soldering performance in mounting can be improved by a simple work while securing the moisture resistance between the leads and the package, and without requiring the work of number of steps of solder plating on the exposed leads after molding.
    Type: Grant
    Filed: March 3, 1999
    Date of Patent: August 13, 2002
    Assignee: Rohm Co., Ltd.
    Inventor: Makoto Aoyama
  • Patent number: 6188566
    Abstract: A compact solid electrolytic capacitor includes a capacitor element having a positive electrode and a negative electrode which are respectively connected electrically to a first lead and a second lead and a casing of a resin material surrounding the capacitor element. A low melting-point metal layer serving as a fuse, which will quickly melt under an abnormal condition, is inserted between and electrically connects the capacitor element and the second lead and an arc-extinguishing material capable of absorbing the melted metal of the low melting-point metallic material fills a throughhole through the second lead where the latter contacts the low melting-point metal layer. The low melting-point metal layer may be in the form of a flat ribbon of thickness only about 50-100 &mgr;m.
    Type: Grant
    Filed: August 13, 1999
    Date of Patent: February 13, 2001
    Assignee: Rohm Co., Ltd.
    Inventor: Makoto Aoyama
  • Patent number: 5629830
    Abstract: In a solid state electrolytic capacitor, an increase in capacity and a reduction in size and weight are intended. A concave is formed in one end surface of a porous chip formed by hardening metal powder and a synthetic resin is filled in the concave. An anode bar is provided which passes through the synthetic resin to be fixed to the chip. After a dielectric film is formed on the surface of the chip through anodic oxidation, a solid state electrolytic layer made of manganese dioxide is formed on the dielectric film and then, a cathode film is formed thereon. At an end surface of the chip, an insulating film is provided, so that the distance between the lead terminal and the chip is reduced without any short circuit being caused.
    Type: Grant
    Filed: May 26, 1995
    Date of Patent: May 13, 1997
    Assignee: Rohm Co., Ltd.
    Inventors: Mamoru Yamagami, Makoto Aoyama
  • Patent number: 5064920
    Abstract: The present invention provides a fluorine-containing copolymer which comprises the following monomers as essential components:(a) a fluoroolefin,(b) a hydroxyalkyl crotonate, and(c) a vinyl monomer other than the above monomers (a) and (b). The present invention further provides a coating composition comprising the above fluorine-containing copolymer and a crosslinking agent having a functional group which reacts with hydroxyl group.
    Type: Grant
    Filed: November 13, 1990
    Date of Patent: November 12, 1991
    Assignee: Toagosei Chemical Industry Co., Ltd.
    Inventors: Etsuzo Marumoto, Masanobu Koyama, Akihito Iida, Yukiya Sakamoto, Makoto Aoyama, Mamoru Takahashi