Patents by Inventor Kenichi Michibata

Kenichi Michibata 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).

  • Method of manufacturing magnetic head
    Patent number: 7536779
    Abstract: A magnetic core portion 16, a residual base material portion 42, and a connecting portion 43 are formed by pressing from a base material 40. Notches 18A are formed at a peripheral edge of the magnetic core portion 16, which is bent in the direction of the plate thickness to form a temporary fixing portion 18. When base materials 40 are overlapped to cut the magnetic core portions 16 from the connecting portion 43, the magnetic core portions 16 are pressed in directions toward one another so that the temporary fixing portion 18 is filled between notches 18A in the other magnetic core portion 16, to fix temporarily the other magnetic core portions 16. Since the magnetic core portions 16 are temporarily and simultaneously fixed by pressing in a cutting step normally carried out, the magnetic core portions can be temporarily fixed with ease.
    Type: Grant
    Filed: January 13, 2005
    Date of Patent: May 26, 2009
    Assignee: Seiko Epson Corporation
    Inventors: Tatsuo Hara, Toshiaki Yanagisawa, Hiroyuki Kojima, Eiichi Nagasaka, Kenichi Michibata, Yoshiaki Oguchi
  • METHOD OF MANUFACTURING MAGNETIC CORE, MAGNETIC CORE, ELECTROMAGNETIC TRANSDUCER, CLOCK, AND ELECTRONIC DEVICE
    Publication number: 20080022511
    Abstract: A magnetic core portion 16, a residual base material portion 42, and a connecting portion 43 are formed by pressing from a base material 40. Notches 18A are formed at a peripheral edge of the magnetic core portion 16, which is bent in the direction of the plate thickness to form a temporary fixing portion 18. When base materials 40 are overlapped to cut the magnetic core portions 16 from the connecting portion 43, the magnetic core portions 16 are pressed in directions toward one another so that the temporary fixing portion 18 is filled between notches 18A in the other magnetic core portion 16, to fix temporarily the other magnetic core portions 16. Since the magnetic core portions 16 are temporarily and simultaneously fixed by pressing in a cutting step normally carried out, the magnetic core portions can be temporarily fixed with ease.
    Type: Application
    Filed: August 10, 2007
    Publication date: January 31, 2008
    Applicant: Seiko Epson Corporation
    Inventors: Tatsuo HARA, Toshiaki Yanagisawa, Hiroyuki Kojima, Eiichi Nagasaka, Kenichi Michibata, Yoshiaki Oguchi
  • Method of manufacturing magnetic core, magnetic core, electromagnetic transducer, timepiece, and electronic device
    Publication number: 20050152063
    Abstract: A magnetic core portion 16, a residual base material portion 42, and a connecting portion 43 are formed by pressing from a base material 40. Notches 18A are formed at a peripheral edge of the magnetic core portion 16, which is bent in the direction of the plate thickness to form a temporary fixing portion 18. When base materials 40 are overlapped to cut the magnetic core portions 16 from the connecting portion 43, the magnetic core portions 16 are pressed in directions toward one another so that the temporary fixing portion 18 is filled between notches 18A in the other magnetic core portion 16, to fix temporarily the other magnetic core portions 16. Since the magnetic core portions 16 are temporarily and simultaneously fixed by pressing in a cutting step normally carried out, the magnetic core portions can be temporarily fixed with ease.
    Type: Application
    Filed: January 13, 2005
    Publication date: July 14, 2005
    Applicant: Seiko Epson Corporation
    Inventors: Tatsuo Hara, Toshiaki Yanagisawa, Hiroyuki Kojima, Eiichi Nagasaka, Kenichi Michibata, Yoshiaki Oguchi