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: 9087982Abstract: 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: GrantFiled: November 18, 2013Date of Patent: July 21, 2015Assignee: TDK CorporationInventors: Hisayoshi Watanabe, Ken Fujii, Takayuki Nishizawa, Masachika Hashino
-
Publication number: 20150140685Abstract: 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: ApplicationFiled: November 18, 2013Publication date: May 21, 2015Applicant: TDK CorporationInventors: Hisayoshi WATANABE, Ken FUJII, Takayuki NISHIZAWA, Masachika HASHINO
-
Patent number: 8529777Abstract: 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: GrantFiled: September 12, 2011Date of Patent: September 10, 2013Assignee: TDK CorporationInventors: Hisayoshi Watanabe, Hideyuki Yatsu, Takayuki Nishizawa, Masashi Sano, Hiromichi Umehara, Takayasu Kanaya, Tetsuji Hori
-
Publication number: 20130062307Abstract: 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: ApplicationFiled: September 12, 2011Publication date: March 14, 2013Applicant: TDK CorporationInventors: Hisayoshi WATANABE, Hideyuki Yatsu, Takayuki Nishizawa, Masashi Sano, Hiromichi Umehara, Takayasu Kanaya, Tetsuji Hori
-
Patent number: 8379346Abstract: 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: GrantFiled: July 29, 2011Date of Patent: February 19, 2013Assignee: TDK CorporationInventors: Hisayoshi Watanabe, Yuji Matsuura, Takayuki Nishizawa, Masashi Sano, Tetsuji Hori
-
Publication number: 20130027810Abstract: 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: ApplicationFiled: July 29, 2011Publication date: January 31, 2013Applicant: TDK CorporationInventors: Hisayoshi WATANABE, Yuji MATSUURA, Takayuki NISHIZAWA, Masashi SANO, Tetsuji HORI
-
Patent number: 8274761Abstract: 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: GrantFiled: March 5, 2010Date of Patent: September 25, 2012Assignee: TDK CorporationInventors: Takayasu Kanaya, Yosuke Antoku, Kazuki Sato, Takayuki Nishizawa, Masaru Iida
-
Patent number: 8199431Abstract: 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: GrantFiled: April 8, 2010Date of Patent: June 12, 2012Assignees: 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: 20110249363Abstract: 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: ApplicationFiled: April 8, 2010Publication date: October 13, 2011Applicants: SAE Magnetics (H.K.) Ltd., TDK CORPORATIONInventors: Takayasu KANAYA, Yosuke ANTOKU, Kazuki SATO, Takayuki NISHIZAWA, Kosuke TANAKA, Masaru IIDA, Kazumi NAKATOGAWA, Eric Cheuk Wing LEUNG, Man TSE
-
Publication number: 20110216430Abstract: 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: ApplicationFiled: March 5, 2010Publication date: September 8, 2011Applicant: TDK CorporationInventors: Takayasu KANAYA, Yosuke Antoku, Kazuki Sato, Takayuki Nishizawa, Masaru Ilda
-
Patent number: 7495159Abstract: 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: GrantFiled: October 29, 2007Date of Patent: February 24, 2009Assignee: Pearl Musical Instruments Co.Inventors: Akito Takegawa, Takayuki Nishizawa