Patents by Inventor Tomoyuki Washizaki

Tomoyuki Washizaki 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: 9035740
    Abstract: A circuit protecting element includes insulating substrate (11), a pair of surface electrodes (12) provided to both ends of a top face of insulating substrate (11), element (13) bridging the pair of surface electrodes (12) and electrically connected to the pair of surface electrodes (12), base layer (14) formed between element (13) and insulating substrate (11), and insulating layer (15) covering element (13). Base layer (14) is formed of a mixture of diatom earth and silicone resin. The structure discussed above allows stabilizing the blowout characteristics of the circuit protecting element.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: May 19, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Tomoyuki Washizaki, Toshiyuki Iwao, Takashi Kitamura, Takashi Watanabe, Naohiro Mikamoto, Masahito Fuchigami, Kazutoshi Matsumura
  • Patent number: 8368502
    Abstract: A surface mount current fuse of the present invention includes a first base which has a recess and is smaller in width at the other end than at one end in the longitudinal direction, and a second base which has the same shape as the first base. The first base and the second base are combined to form a box-shaped body by joining the lower surface of the second base to the upper surface of the upper surface of the first base in such a manner that one end of the first base and the other end of the second base are in contact with each other. The recess of the first base and the recess of the second base form a space portion in which to dispose an element portion. The borderline between the first base and the second base passes through the center point on a side surface of the body. As a result, the surface mount current fuse has high production efficiency.
    Type: Grant
    Filed: March 14, 2007
    Date of Patent: February 5, 2013
    Assignee: Panasonic Corporation
    Inventors: Tomoyuki Washizaki, Toshiyuki Iwao, Kenji Senda, Takashi Watanabe, Kazutoshi Matsumura, Seiji Tsuda
  • Patent number: 7884698
    Abstract: An electronic component is provided in which: impact-absorbing layers are provided so as to cover at least the corner portions of both end portions of a base which is made of an insulating mixture of ceramic and glass; a conductive film is formed so as to cover the surface of these impact-absorbing layers and the surface of the base; the portions of this conductive film which cover the surfaces of the impact-absorbing layers are formed into electrodes; and a resistance-adjusting groove is provided in an other portion of the conductive film than the portions serving as the electrodes.
    Type: Grant
    Filed: April 30, 2004
    Date of Patent: February 8, 2011
    Assignee: Panasonic Corporation
    Inventors: Hideki Tanaka, Tomoyuki Washizaki, Kiyoshi Ikeuchi, Toshiyuki Iwao, Yasuki Nagatomo, Kesato Iiboshi, Jiro Ota, Yasuhiro Izumi
  • Publication number: 20100245028
    Abstract: A circuit protecting element includes insulating substrate (11), a pair of surface electrodes (12) provided to both ends of a top face of insulating substrate (11), element (13) bridging the pair of surface electrodes (12) and electrically connected to the pair of surface electrodes (12), base layer (14) formed between element (13) and insulating substrate (11), and insulating layer (15) covering element (13). Base layer (14) is formed of a mixture of diatom earth and silicone resin. The structure discussed above allows stabilizing the blowout characteristics of the circuit protecting element.
    Type: Application
    Filed: November 6, 2008
    Publication date: September 30, 2010
    Inventors: Tomoyuki Washizaki, Toshiyuki Iwao, Takashi Kitamura, Takashi Watanabe, Naohiro Mikamoto, Masahito Fuchigami, Kazutoshi Matsumura
  • Publication number: 20090015365
    Abstract: A surface mount current fuse of the present invention includes a first base which has a recess and is smaller in width at the other end than at one end in the longitudinal direction, and a second base which has the same shape as the first base. The first base and the second base are combined to form a box-shaped body by joining the lower surface of the second base to the upper surface of the upper surface of the first base in such a manner that one end of the first base and the other end of the second base are in contact with each other. The recess of the first base and the recess of the second base form a space portion in which to dispose an element portion. The borderline between the first base and the second base passes through the center point on a side surface of the body. As a result, the surface mount current fuse has high production efficiency.
    Type: Application
    Filed: March 14, 2007
    Publication date: January 15, 2009
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Tomoyuki Washizaki, Toshiyuki Iwao, Kenji Senda, Takashi Watanabe, Kazutoshi Matsumura, Seiji Tsuda
  • Publication number: 20060255897
    Abstract: An electronic component is provided in which: impact-absorbing layers are provided so as to cover at least the corner portions of both end portions of a base which is made of an insulating mixture of ceramic and glass; a conductive film is formed so as to cover the surface of these impact-absorbing layers and the surface of the base; the portions of this conductive film which cover the surfaces of the impact-absorbing layers are formed into electrodes; and a resistance-adjusting groove is provided in an other portion of the conductive film than the portions serving as the electrodes.
    Type: Application
    Filed: April 30, 2004
    Publication date: November 16, 2006
    Inventors: Hideki Tanaka, Tomoyuki Washizaki, Kiyoshi Ikeuchi, Toshiyuki Iwao, Yasuki Nagatomo, Kesato Iiboshi, Jiro Ota, Yasuhiro Izumi
  • Patent number: 6998939
    Abstract: Comprising a magnetic member 32 formed by laminating magnetic sheets 24, 28, 30, 31 a first impedance element 21 formed in the magnetic member 32, and a second impedance element 25 formed above the first impedance element 21, the first impedance element 21 includes a first normal impedance element 22 and a first common impedance element 23, and the second impedance element 25 includes a second common impedance element 26 and a second normal impedance element 27.
    Type: Grant
    Filed: March 7, 2001
    Date of Patent: February 14, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Shogo Nakayama, Takeshi Orita, Eiichi Uriu, Kazuo Oishi, Tomoyuki Washizaki, Koji Nishimura, Kazutoshi Matsumura
  • Patent number: 6876537
    Abstract: A ceramic electronic component includes two or more electrodes 5 and 6 spaced at a predetermined distance from each other, between which a potential difference is produced in operation and a void 9 that penetrates to the outside is provided. In the void 9, a water repellent film 10 is formed. This prevents water vapor from being absorbed in the void 9 connecting the electrodes 5 and 6, and thereby preventing the formation of a conductive path and the occurrence of ion migration.
    Type: Grant
    Filed: August 13, 2003
    Date of Patent: April 5, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Norihisa Takahara, Emiko Igaki, Masakazu Tanahashi, Takafumi Moriyasu, Rui Nakao, Tomoyuki Washizaki, Yoshiaki Fukui
  • Patent number: 6853267
    Abstract: In a noise filter having a large impedance in a common mode, a first conductor and a second conductor provided on first magnetic sheets and have spiral shapes of plural turns and spaced from each other for avoiding short-circuit. The first conductor is provided inside the spiral shape of the second conductor. The other end of the first inner conductor is located adjacent to the other end of the second inner conductor. The respective other ends of the first inner conductor and the second inner conductor on the magnetic sheet are connected at the respective other ends to first and second conductors provided on another magnetic sheet.
    Type: Grant
    Filed: January 11, 2002
    Date of Patent: February 8, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hironobu Chiba, Kazuo Oishi, Eiichi Uriu, Takeshi Orita, Shogo Nakayama, Kazutoshi Matsumura, Hironori Motomitsu, Atsushi Shinkai, Tomoyuki Washizaki
  • Publication number: 20040130415
    Abstract: In a noise filter having a large impedance in a common mode, a first conductor 12 and a second conductor 13 provided on first magnetic sheets 11a and 11b have spiral shapes of plural turns and spaced from each other for avoiding short-circuit. The first conductor are provided inside the spiral shape of the second conductor. The other end of the first inner conductor 12 is located adjacent to the other end of the second inner conductor 13. The respective other ends of the first inner conductor 12 and the second inner conductor 13 on the magnetic sheet are connected at the respective other ends to first and second conductors provided on another magnetic sheet.
    Type: Application
    Filed: July 10, 2003
    Publication date: July 8, 2004
    Inventors: Hironobu Chiba, Kazuo Oishi, Eiichi Uriu, Takeshi Orita, Shogo Nakayama, Kazutoshi Matsumura, Hironori Motomitsu, Atsushi Shinkai, Tomoyuki Washizaki
  • Patent number: 6721166
    Abstract: A ceramic electronic component includes two or more electrodes 5 and 6 spaced at a predetermined distance from each other, between which a potential difference is produced in operation and a void 9 that penetrates to the outside is provided. In the void 9, a water repellent film 10 is formed. This prevents water vapor from being absorbed in the void 9 connecting the electrodes 5 and 6, and thereby preventing the formation of a conductive path and the occurrence of ion migration.
    Type: Grant
    Filed: July 11, 2002
    Date of Patent: April 13, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Norihisa Takahara, Emiko Igaki, Masakazu Tanahashi, Takafumi Moriyasu, Rui Nakao, Tomoyuki Washizaki, Yoshiaki Fukui
  • Publication number: 20040047104
    Abstract: A ceramic electronic component includes two or more electrodes 5 and 6 spaced at a predetermined distance from each other, between which a potential difference is produced in operation and a void 9 that penetrates to the outside is provided. In the void 9, a water repellent film 10 is formed. This prevents water vapor from being absorbed in the void 9 connecting the electrodes 5 and 6, and thereby preventing the formation of a conductive path and the occurrence of ion migration.
    Type: Application
    Filed: August 13, 2003
    Publication date: March 11, 2004
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Norihisa Takahara, Emiko Igaki, Masakazu Tanahashi, Takafumi Moriyasu, Rui Nakao, Tomoyuki Washizaki, Yoshiaki Fukui
  • Publication number: 20030134612
    Abstract: Comprising a magnetic member 32 formed by laminating magnetic sheets 24, 28, 30, 31 a first impedance element 21 formed in the magnetic member 32, and a second impedance element 25 formed above the first impedance element 21, the first impedance element 21 includes a first normal impedance element 22 and a first common impedance element 23, and the second impedance element 25 includes a second common impedance element 26 and a second normal impedance element 27.
    Type: Application
    Filed: October 22, 2002
    Publication date: July 17, 2003
    Inventors: Shojo Nakayama, Takeshi Orita, Eiichi Uriu, Kazuo Oishi, Tomoyuki Washizaki, Koji Nishimura, Kazutoshi Matsumura
  • Publication number: 20030016486
    Abstract: A ceramic electronic component includes two or more electrodes 5 and 6 spaced at a predetermined distance from each other, between which a potential difference is produced in operation and a void 9 that penetrates to the outside is provided. In the void 9, a water repellent film 10 is formed. This prevents water vapor from being absorbed in the void 9 connecting the electrodes 5 and 6, and thereby preventing the formation of a conductive path and the occurrence of ion migration.
    Type: Application
    Filed: July 11, 2002
    Publication date: January 23, 2003
    Inventors: Norihisa Takahara, Emiko Igaki, Masakazu Tanahashi, Takafumi Moriyasu, Rui Nakao, Tomoyuki Washizaki, Yoshiaki Fukui
  • Patent number: 6120937
    Abstract: In a positive electrode for an alkaline storage battery, a layer is formed between a porous substrate as a core material and an active material including nickel hydroxide filled into the porous substrate. The layer includes an oxide containing cobalt and nickel and/or a hydroxide containing cobalt and nickel. In the hydroxide, the average of an oxidation number of a metal is more than +II. The layer has a high electric conductivity while keeping the high corrosion resistance. A utilization rate of the active material can be improved due to the high electric conductivity. An alkaline storage battery including such an electrode has a good cycle property.
    Type: Grant
    Filed: May 11, 1998
    Date of Patent: September 19, 2000
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Tamao Kojima, Munehiro Tabata, Tomoyuki Washizaki, Masakazu Tanahashi, Yoshiki Murakami, Satoshi Kaida, Masayoshi Maruta