Patents by Inventor Takayuki Nishizawa

Takayuki Nishizawa 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: 9087982
    Abstract: A method for manufacturing a pattern multilayer body that has a plurality of pattern layers, and where a pattern is formed in each pattern layer, includes a step of forming an overlay pattern within an overlay pattern formation region, and in the step of forming the overlay pattern, a photoresist film is formed, and after a photoresist film is exposed via a main mask, a resist pattern is formed by exposing a sub mask(s). The main mask has a pattern light-shielding part that is commonly used for forming a pattern in each pattern layer, and each main light-shielding part for forming each overlay pattern; and a sub mask has an opening part that is exposable to an unexposed region(s) within an overlay pattern formation region other than an unexposed region(s) on the photoresist film, which has been light-shielded by the main light-shielding part for forming a corresponding overlay pattern.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: July 21, 2015
    Assignee: TDK Corporation
    Inventors: Hisayoshi Watanabe, Ken Fujii, Takayuki Nishizawa, Masachika Hashino
  • Publication number: 20150140685
    Abstract: A method for manufacturing a pattern multilayer body that has a plurality of pattern layers, and where a pattern is formed in each pattern layer, includes a step of forming an overlay pattern within an overlay pattern formation region, and in the step of forming the overlay pattern, a photoresist film is formed, and after a photoresist film is exposed via a main mask, a resist pattern is formed by exposing a sub mask(s). The main mask has a pattern light-shielding part that is commonly used for forming a pattern in each pattern layer, and each main light-shielding part for forming each overlay patter; and a sub mask has an opening part that is exposable to an unexposed region(s) within an overlay pattern formation region other than an unexposed region(s) on the photoresist film, which has been light-shielded by the main light-shielding part for forming a corresponding overlay pattern.
    Type: Application
    Filed: November 18, 2013
    Publication date: May 21, 2015
    Applicant: TDK Corporation
    Inventors: Hisayoshi WATANABE, Ken FUJII, Takayuki NISHIZAWA, Masachika HASHINO
  • Patent number: 8529777
    Abstract: The present invention relates to a method of making a mask for patterning a thin film. The method includes a step of forming an inorganic material, which is resolvable into alkali solution, on a substrate; a step of forming the inorganic material in a predetermined pattern; and a step of narrowing the inorganic material with the alkali solution to form the mask.
    Type: Grant
    Filed: September 12, 2011
    Date of Patent: September 10, 2013
    Assignee: TDK Corporation
    Inventors: Hisayoshi Watanabe, Hideyuki Yatsu, Takayuki Nishizawa, Masashi Sano, Hiromichi Umehara, Takayasu Kanaya, Tetsuji Hori
  • Publication number: 20130062307
    Abstract: The present invention relates to a method of making a mask for patterning a thin film The method includes a step of forming an inorganic material, which is resolvable into alkali solution, on a substrate; a step of forming the inorganic material in a predetermined pattern; and a step of narrowing the inorganic material with the alkali solution to form the mask.
    Type: Application
    Filed: September 12, 2011
    Publication date: March 14, 2013
    Applicant: TDK Corporation
    Inventors: Hisayoshi WATANABE, Hideyuki Yatsu, Takayuki Nishizawa, Masashi Sano, Hiromichi Umehara, Takayasu Kanaya, Tetsuji Hori
  • Patent number: 8379346
    Abstract: The present invention relates to a method of forming a metal in a concave portion of a substrate. The method includes a step of preparing a substrate having a concave portion; a step of applying a liquid coating member on the substrate and filling in and solidifying the concave portion with the coating member; a step of covering the coating member with a resist; a step of forming a penetrating hole that penetrates the resist in a position of the concave portion of the substrate; a step of removing the coating member within the concave portion; and a step of filling a metal into a portion where the coating member has been removed.
    Type: Grant
    Filed: July 29, 2011
    Date of Patent: February 19, 2013
    Assignee: TDK Corporation
    Inventors: Hisayoshi Watanabe, Yuji Matsuura, Takayuki Nishizawa, Masashi Sano, Tetsuji Hori
  • Publication number: 20130027810
    Abstract: The present invention relates to a method of forming a metal in a concave portion of a substrate. The method includes a step of preparing a substrate having a concave portion; a step of applying a liquid coating member on the substrate and filling in and solidifying the concave portion with the coating member; a step of covering the coating member with a resist; a step of forming a penetrating hole that penetrates the resist in a position of the concave portion of the substrate; a step of removing the coating member within the concave portion; and a step of filling a metal into a portion where the coating member has been removed.
    Type: Application
    Filed: July 29, 2011
    Publication date: January 31, 2013
    Applicant: TDK Corporation
    Inventors: Hisayoshi WATANABE, Yuji MATSUURA, Takayuki NISHIZAWA, Masashi SANO, Tetsuji HORI
  • Patent number: 8274761
    Abstract: A magnetic head disposed in a slider arranged with an interval with respect to a magnetic disk includes a sensor that is positioned in a stepped-back position from an air bearing surface facing the magnetic disk, an insulating film that is positioned on the air bearing surface and that covers the sensor; a pair of lead films, the lead films being electrically connected to the sensor such that at least portions of the lead films are exposed on the air bearing surface, and being configured to transfer a temperature change of the air bearing surface to the sensor.
    Type: Grant
    Filed: March 5, 2010
    Date of Patent: September 25, 2012
    Assignee: TDK Corporation
    Inventors: Takayasu Kanaya, Yosuke Antoku, Kazuki Sato, Takayuki Nishizawa, Masaru Iida
  • Patent number: 8199431
    Abstract: A magnetic head disposed in a slider, that is arranged at an interval from a magnetic disk includes a sensor disposed in a position that is opposed to the magnetic disk, a heat conductive film that is positioned on an air bearing surface opposed to the magnetic disk, and that is formed so as to overlap the sensor, of which a height in a direction perpendicular to the air bearing surface is more than a height of the sensor, and that transfers a temperature change of the air bearing surface to the sensor, and a pair of lead films electrically connected to the sensor and not electrically connected to the heat conductive film.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: June 12, 2012
    Assignees: TDK Corporation, SAE Magnetics (H.K.) Ltd.
    Inventors: Takayasu Kanaya, Yosuke Antoku, Kazuki Sato, Takayuki Nishizawa, Kosuke Tanaka, Masaru Iida, Kazumi Nakatogawa, Eric Cheuk Wing Leung, Man Tse
  • Publication number: 20110249363
    Abstract: A magnetic head disposed in a slider, that is arranged at an interval from a magnetic disk includes a sensor disposed in a position that is opposed to the magnetic disk, a heat conductive film that is positioned on an air bearing surface opposed to the magnetic disk, and that is formed so as to overlap the sensor, of which a height in a direction perpendicular to the air bearing surface is more than a height of the sensor, and that transfers a temperature change of the air bearing surface to the sensor, and a pair of lead films electrically connected to the sensor and not electrically connected to the heat conductive film.
    Type: Application
    Filed: April 8, 2010
    Publication date: October 13, 2011
    Applicants: SAE Magnetics (H.K.) Ltd., TDK CORPORATION
    Inventors: Takayasu KANAYA, Yosuke ANTOKU, Kazuki SATO, Takayuki NISHIZAWA, Kosuke TANAKA, Masaru IIDA, Kazumi NAKATOGAWA, Eric Cheuk Wing LEUNG, Man TSE
  • Publication number: 20110216430
    Abstract: A magnetic head disposed in a slider arranged with an interval with respect to a magnetic disk includes a sensor that is positioned in a stepped-back position from an air bearing surface facing the magnetic disk, an insulating film that is positioned on the air bearing surface and that covers the sensor; a pair of lead films, the lead films being electrically connected to the sensor such that at least portions of the lead films are exposed on the air bearing surface, and being configured to transfer a temperature change of the air bearing surface to the sensor.
    Type: Application
    Filed: March 5, 2010
    Publication date: September 8, 2011
    Applicant: TDK Corporation
    Inventors: Takayasu KANAYA, Yosuke Antoku, Kazuki Sato, Takayuki Nishizawa, Masaru Ilda
  • Patent number: 7495159
    Abstract: A sound enhancement system for resonating chambers, in particular for drums, is provided. Specifically, at least one reflection plate is added within the drum cylinder whereby the reflection plate(s) vibrate sympathetically to add pleasing frequencies to the sound when a drum or other resonating chamber is struck. The reflecting plate(s) are preferably metallic elements mounted to the drum via the screws that attach the lugs. In the preferred embodiment, the reflecting elements are formed as tent-like or prism-shaped members that are mounted to vibrate within the resonating chamber. Other shapes are envisioned for the resonating elements.
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: February 24, 2009
    Assignee: Pearl Musical Instruments Co.
    Inventors: Akito Takegawa, Takayuki Nishizawa