Patents by Inventor Hideo Ajichi

Hideo Ajichi 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: 11282629
    Abstract: The multilayer inductor includes a multilayer body including a plurality of insulating layers laminated in a lamination direction, and a plurality of coil groups arranged in the multilayer body along the lamination direction and connected in series. Each of the coil groups includes a plurality of coil patterns respectively provided on the insulating layers and laminated in the lamination direction, and is configured by connecting a plurality of pattern groups in series. Each of the pattern groups is formed by connecting n (n is a positive integer) coil patterns in parallel. The number of parallels n of at least one of the coil groups is different from the number of parallels n of another coil group. The insulating layers include magnetic and non-magnetic insulating layers. At least one of the insulating layers adjacent to one of the coil patterns is the non-magnetic insulating layer.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: March 22, 2022
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Kouji Yamauchi, Toshihiko Fukushima, Hideo Ajichi
  • Publication number: 20180374628
    Abstract: The multilayer inductor includes a multilayer body including a plurality of insulating layers laminated in a lamination direction, and a plurality of coil groups arranged in the multilayer body along the lamination direction and connected in series. Each of the coil groups includes a plurality of coil patterns respectively provided on the insulating layers and laminated in the lamination direction, and is configured by connecting a plurality of pattern groups in series. Each of the pattern groups is formed by connecting n (n is a positive integer) coil patterns in parallel. The number of parallels n of at least one of the coil groups is different from the number of parallels n of another coil group. The insulating layers include magnetic and non-magnetic insulating layers. At least one of the insulating layers adjacent to one of the coil patterns is the non-magnetic insulating layer.
    Type: Application
    Filed: June 15, 2018
    Publication date: December 27, 2018
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Kouji YAMAUCHI, Toshihiko FUKUSHIMA, Hideo AJICHI
  • Patent number: 6217820
    Abstract: A method of manufacturing a ferrite sintered body includes the steps of: adding B4C in a ferrite raw material and firing the ferrite raw material, whereby the ferrite sintered body has a high &mgr;i and a high Q, is less irregular in its characteristics, has a high volume resistivity and is capable of preventing deterioration of insulating resistance.
    Type: Grant
    Filed: December 2, 1999
    Date of Patent: April 17, 2001
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Junji Kurobe, Hideo Ajichi, Takashi Kodama, Takehiro Konoike, Akihiro Nakamura
  • Patent number: 6187218
    Abstract: A method of producing a Ni—Cu—Zn ferrite material comprises the steps of preparing a mixture of an iron compound powder having a specific surface area of about 8.5 m2/g or more, a nickel compound powder, copper compound powder and a zinc compound powder, the mixture having a specific surface area of about 8.0 m2/g or more; pre-calcining the mixture such that the pre-calcined mixture has a surface area of about 5.0 m2/g or more and a spinel crystal synthesizability within a range of about 80.5% to 98%; and milling the pre-calcined mixture to obtain a powder of a Ni—Cu—Zn ferrite material having a specific surface area of about 6.0 m2/g or more.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: February 13, 2001
    Assignee: Murata Manufacturing Co., Ltd.
    Inventors: Takashi Kodama, Hideo Ajichi, Takehiro Konoike, Kunisaburo Tomono