Patents by Inventor Yoshimi Yodokawa

Yoshimi Yodokawa 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: 7665499
    Abstract: In a laminating apparatus for a ceramic green sheet according to the present invention, cutting means and laminating means are positioned on a conveying path of a carrier film conveyed by conveying means. Specifically, cutting of the ceramic green sheet and lamination of sheet pieces are carried out on a single conveying path. Consequently, the reduction of production efficiency is prevented significantly. Furthermore, the position of the cutting means and the position of the laminating means are different. Therefore, even when cut scraps are generated when the ceramic green sheet is cut by the cutting means, the cut scraps are significantly prevented from entering between layers in a green sheet laminated body.
    Type: Grant
    Filed: March 24, 2006
    Date of Patent: February 23, 2010
    Assignee: TDK Corporation
    Inventors: Yoshimi Yodokawa, Susumu Nakamura, Kikuo Takahashi, Makoto Takahashi, Hiroshi Yagi, Tsukasa Satoh
  • Patent number: 7563402
    Abstract: The present invention makes it possible to strip off a stamper stuck on a resin layer for groove formation during the manufacture of an optical disc from the resin layer without imparting damage or the like to the stamper. The present invention achieves this object by having the steps of bringing about a state in which the stamper protrudes from a substrate by a predetermined width, rotating the substrate with the back surface of the disc-shaped substrate attracted and held, elevating rollers capable of rolling relative to a contacting surface contacting with the protruding portion simultaneously with the rotation, and continuously applying a force working in a direction to separate the protruding portion from the substrate in the circumferential direction of the stamper.
    Type: Grant
    Filed: March 22, 2006
    Date of Patent: July 21, 2009
    Assignee: TDK Corporation
    Inventors: Yukio Kaneko, Yoshimi Yodokawa, Takeshi Umega, Mamoru Usami, Tsuyoshi Komaki
  • Publication number: 20060219070
    Abstract: A cutting apparatus for a ceramic green sheet according to the present invention is a cutting apparatus for a ceramic green sheet for cutting a ceramic green sheet held on a carrier film into a square-shaped sheet piece, and comprises four roller cutters, each of which is disposed so as to correspond to each edge of the sheet piece, and moving means for moving the roller cutters along the corresponding edges of the sheet piece. In this cutting apparatus, the four edges of the sheet piece are cut by the roller cutters, thus cutting failures on the ceramic green sheet are significantly prevented. Furthermore, each of the edges of the sheet piece is cut without changing the position of the cutters, thus improvement of cutting dimensional accuracy is realized, compared to the conventional apparatus in which the position of the cutter is changed when cutting each edge.
    Type: Application
    Filed: March 24, 2006
    Publication date: October 5, 2006
    Applicant: TDK CORPORATION
    Inventors: Yoshimi Yodokawa, Susumu Nakamura, Kikuo Takahashi, Makoto Takahashi, Hiroshi Yagi, Tsukasa Satoh
  • Publication number: 20060219364
    Abstract: In a laminating apparatus for a ceramic green sheet according to the present invention, cutting means and laminating means are positioned on a conveying path of a carrier film conveyed by conveying means. Specifically, cutting of the ceramic green sheet and lamination of sheet pieces are carried out on a single conveying path. Consequently, the reduction of production efficiency is prevented significantly. Furthermore, the position of the cutting means and the position of the laminating means are different. Therefore, even when cut scraps are generated when the ceramic green sheet is cut by the cutting means, the cut scraps are significantly prevented from entering between layers in a green sheet laminated body.
    Type: Application
    Filed: March 24, 2006
    Publication date: October 5, 2006
    Applicant: TDK CORPORATION
    Inventors: Yoshimi Yodokawa, Susumu Nakamura, Kikuo Takahashi, Makoto Takahashi, Hiroshi Yagi, Tsukasa Satoh
  • Publication number: 20060214318
    Abstract: The present invention makes it possible to strip off a stamper stuck on a resin layer for groove formation during the manufacture of an optical disc from the resin layer without imparting damage or the like to the stamper. The present invention achieves this object by having the steps of bringing about a state in which the stamper protrudes from a substrate by a predetermined width, rotating the substrate with the back surface of the disc-shaped substrate attracted and held, elevating rollers capable of rolling relative to a contacting surface contacting with the protruding portion simultaneously with the rotation, and continuously applying a force working in a direction to separate the protruding portion from the substrate in the circumferential direction of the stamper.
    Type: Application
    Filed: March 22, 2006
    Publication date: September 28, 2006
    Applicant: TDK CORPORATION
    Inventors: Yukio Kaneko, Yoshimi Yodokawa, Takeshi Umega, Mamoru Usami, Tsuyoshi Komaki
  • Patent number: 5935365
    Abstract: An unbaked ceramic layer is formed by applying a ceramic paste on to an organic flexible supporting body. First target marks are formed on the flexible supporting body before or after this process. Then, the positioning for printing electrodes is performed based upon information obtained through image processing of the first target marks, to print the electrodes on the unbaked ceramic layer. With this, a manufacturing method for ceramic electronic components that can minimize positional misalignment in electrode patterns is provided.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: August 10, 1999
    Assignee: TDK Corporation
    Inventors: Ryo Kobayashi, Takaya Ishigaki, Hiroshi Yagi, Shigehiko Shirai, Eizou Tsunoda, Kaoru Kawasaki, Ryuji Hosogaya, Yasunori Chiba, Yoshimi Yodokawa, Minoru Kanzaki, Masatoshi Ito, Takashi Abe, Yasushi Izumibe
  • Patent number: 5716481
    Abstract: According to the present invention, ceramic electronic components are produced by a process which includes the steps of forming an unbaked ceramic layer on a surface of an organic flexible supporting body by applying a ceramic paste, the surface having an area that is given a peeling treatment and areas that are not given the peeling treatment; forming first target marks on the flexible supporting body; and positioning and priming electrodes on the unbaked ceramic layer, based upon information obtained through image processing of the first target marks.
    Type: Grant
    Filed: October 27, 1995
    Date of Patent: February 10, 1998
    Assignee: TDK Corporation
    Inventors: Ryo Kobayashi, Takaya Ishigaki, Hiroshi Yagi, Shigehiko Shirai, Eizou Tsunoda, Kaoru Kawasaki, Ryuji Hosogaya, Yasunori Chiba, Yoshimi Yodokawa, Minoru Kanzaki, Masatoshi Ito, Takashi Abe, Yasushi Izumibe