Patents by Inventor Makoto HIRAKI

Makoto HIRAKI 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: 20220189674
    Abstract: A laminated coil component includes a multilayer body in which a coil, which is obtained by electrically connecting a plurality of coil conductors with a via conductor interposed therebetween, is provided in an inside of an insulator portion which is obtained by laminating a plurality of insulation layers. Each of a first coil conductor and a second coil conductor that are adjacent to each other in a lamination direction and are electrically connected in series with a first via conductor interposed therebetween includes a first main surface that faces the opposite direction to the lamination direction and on which a void exists. The second coil conductor includes a second main surface that faces the lamination direction and on which another void exists, and the other void locally exists on a position opposed to the first via conductor.
    Type: Application
    Filed: December 10, 2021
    Publication date: June 16, 2022
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Yuudai SUZUKI, Katsuhisa IMADA, Makoto HIRAKI, Ikuno SUGIYAMA, Hiroshi UEKI
  • Publication number: 20210287842
    Abstract: A multilayer coil component includes a multilayer body that includes insulating layers that are stacked; a coil disposed in the multilayer body; and outer electrodes disposed on surfaces of the multilayer body and electrically connected to the coil. The coil includes at least two coil conductor groups that each include at least two coil conductors connected to each other in parallel through two coupling conductors. The at least two coil conductor groups are connected to each other in series through a connecting conductor. The connecting conductor connects the coil conductor between the two coupling conductors in one of the at least two coil conductor groups to the coil conductor between the two coupling conductors in another one of the at least two coil conductor groups.
    Type: Application
    Filed: March 9, 2021
    Publication date: September 16, 2021
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Makoto HIRAKI, Ryohei KAWABATA, Katsuhisa IMADA
  • Publication number: 20210272733
    Abstract: A coil component in which stress inside thereof is alleviated and the DC resistance is low. A multilayer coil component includes an element body that includes an insulator portion and a coil embedded in the insulator portion; and outer electrodes disposed on surfaces of the insulator portion and electrically connected to ends of the coil. There is a groove-shaped void portion at a boundary between the coil and the insulator portion, and the void portion extends in a length direction of the coil. The coil has a ridge in the void portion, and the ridge extends in the length direction of the coil.
    Type: Application
    Filed: February 24, 2021
    Publication date: September 2, 2021
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Makoto HIRAKI, Katsuhisa IMADA
  • Publication number: 20210249189
    Abstract: A method for producing a multilayer coil component includes preparing an insulating sheet; forming a resin paste layer on the insulating sheet by using a resin paste; forming a conductive paste layer by using a conductive paste, the conductive paste layer covering the resin paste layer and having a projecting portion at a portion where a second void portion is to be formed; forming an insulating paste layer on the insulating sheet by using an insulating paste such that at least part of an upper surface of the conductive paste layer is exposed; stacking the insulating sheets having the resin paste layer, the conductive paste layer, and the insulating paste layer formed thereon to form a multilayer compact that includes the conductive paste layers connected into a coil shape; and firing the multilayer compact.
    Type: Application
    Filed: February 5, 2021
    Publication date: August 12, 2021
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Ryouji MIZOBATA, Makoto HIRAKI, Katsuhisa IMADA, Morihiro HAMANO
  • Publication number: 20210249178
    Abstract: A highly reliable multilayer coil component, in which the difference in shrinkage ratio between an insulator portion and a conductor portion during firing can be reduced, includes an insulator portion; a coil that is embedded in the insulator portion and includes a plurality of coil conductor layers electrically connected to one another; and outer electrodes that are disposed on surfaces of the insulator portion and are electrically connected to the coil. The coil conductor layers that are adjacent to each other in a stacking direction are connected to each other through a via conductor and a connecting conductor, and the connecting conductor has a pore area ratio smaller than a pore area ratio of the coil conductor layers.
    Type: Application
    Filed: February 4, 2021
    Publication date: August 12, 2021
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Katsuhisa IMADA, Morihiro HAMANO, Makoto HIRAKI, Ryouji MIZOBATA
  • Publication number: 20210249172
    Abstract: A highly reliable multilayer coil component in which the internal stress is further alleviated, and a method for producing the same. The method produces a multilayer coil component that includes an insulator portion, a coil that is embedded in the insulator portion and includes a plurality of coil conductor layers electrically connected to one another, and an outer electrode that is disposed on a surface of the insulator portion and is electrically connected to an extended portion of the coil. The method includes forming a conductive paste layer by using a conductive paste; forming an insulating paste layer by using an insulating paste; forming a multilayer compact that includes the conductive paste layer and the insulating paste layer; and firing the multilayer compact, in which the conductive paste has a PVC of 60% or more and 80% or less (i.e., from 60% to 80%).
    Type: Application
    Filed: February 5, 2021
    Publication date: August 12, 2021
    Applicant: Murata Manufacturing Co., Ltd.
    Inventors: Makoto HIRAKI, Katsuhisa IMADA, Morihiro HAMANO, Ryouji MIZOBATA