Patents by Inventor Satoshi Fujisawa

Satoshi Fujisawa 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: 20240092724
    Abstract: Provided is a compound that can be used for a resin for a resist having excellent sensitivity, resolution, and etching resistance, or the like, by a compound represented by the following formula (1): (wherein R1 represents a hydrogen atom or a methyl group, R2 represents an aliphatic hydrocarbon group having 1 to 6 carbon atoms, m represents an integer of 0 to 5, and n represents an integer of 0 to 4).
    Type: Application
    Filed: October 13, 2023
    Publication date: March 21, 2024
    Applicant: Maruzen Petrochemical Co., Ltd.
    Inventors: Satoshi KAKUTA, Hiromitsu BABA, Teruyo IKEDA, Ryo FUJISAWA, Kazuhiko HABA
  • Patent number: 11919850
    Abstract: Provided is a compound that can be used for a resin for a resist having excellent sensitivity, resolution, and etching resistance, or the like, by a compound represented by the following formula (1): (wherein R1 represents a hydrogen atom or a methyl group, R2 represents an aliphatic hydrocarbon group having 1 to 6 carbon atoms, m represents an integer of 0 to 5, and n represents an integer of 0 to 4).
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: March 5, 2024
    Assignee: Maruzen Petrochemical Co., Ltd.
    Inventors: Satoshi Kakuta, Hiromitsu Baba, Teruyo Ikeda, Ryo Fujisawa, Kazuhiko Haba
  • Patent number: 11493748
    Abstract: An optical filter device includes a wavelength variable interference filter that includes a pair of reflective films which face each other, and a fixed substrate in which one of the pair of reflective films is provided; a base to which the fixed substrate is fixed; and a fixing member which fixes one place on the fixed substrate to the base, a surface which is on other place of the one place of the substrate and the base are disposed with a gap therebetween.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: November 8, 2022
    Inventors: Daisuke Saito, Satoshi Fujisawa, Yasushi Matsuno, Nozomu Hirokubo
  • Publication number: 20200264425
    Abstract: An optical filter device includes a wavelength variable interference filter that includes a pair of reflective films which face each other, and a fixed substrate in which one of the pair of reflective films is provided; a base to which the fixed substrate is fixed; and a fixing member which fixes one place on the fixed substrate to the base, a surface which is on other place of the one place of the substrate and the base are disposed with a gap therebetween.
    Type: Application
    Filed: May 8, 2020
    Publication date: August 20, 2020
    Inventors: Daisuke SAITO, Satoshi FUJISAWA, Yasushi MATSUNO, Nozomu HIROKUBO
  • Patent number: 10684463
    Abstract: An optical filter device includes a wavelength variable interference filter that includes a pair of reflective films which face each other, and a fixed substrate in which one of the pair of reflective films is provided; a base to which the fixed substrate is fixed; and a fixing member which fixes one place on the fixed substrate to the base, a surface which is on other place of the oneplace of the substrate and the base are disposed with a gap therebetween.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: June 16, 2020
    Assignee: Seiko Epson Corporation
    Inventors: Daisuke Saito, Satoshi Fujisawa, Yasushi Matsuno, Nozomu Hirokubo
  • Patent number: 10330917
    Abstract: An optical filter device includes a wavelength variable interference filter that includes a pair of reflective films which face each other, and a fixed substrate in which one of the pair of reflective films is provided; a base to which the fixed substrate is fixed; and a fixing member which fixes one place on the fixed substrate to the base, a surface which is on other place of the one place of the substrate and the base are disposed with a gap therebetween.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: June 25, 2019
    Assignee: Seiko Epson Corporation
    Inventors: Daisuke Saito, Satoshi Fujisawa, Yasushi Matsuno, Nozomu Hirokubo
  • Publication number: 20190146206
    Abstract: An optical filter device includes a wavelength variable interference filter that includes a pair of reflective films which face each other, and a fixed substrate in which one of the pair of reflective films is provided; a base to which the fixed substrate is fixed; and a fixing member which fixes one place on the fixed substrate to the base, a surface which is on other place of the oneplace of the substrate and the base are disposed with a gap therebetween.
    Type: Application
    Filed: January 9, 2019
    Publication date: May 16, 2019
    Inventors: Daisuke SAITO, Satoshi FUJISAWA, Yasushi MATSUNO, Nozomu HIROKUBO
  • Publication number: 20160091644
    Abstract: An optical filter device includes a wavelength variable interference filter that includes a pair of reflective films which face each other, and a fixed substrate in which one of the pair of reflective films is provided; a base to which the fixed substrate is fixed; and a fixing member which fixes one place on the fixed substrate to the base, a surface which is on other place of the oneplace of the substrate and the base are disposed with a gap therebetween.
    Type: Application
    Filed: September 25, 2015
    Publication date: March 31, 2016
    Inventors: Daisuke SAITO, Satoshi FUJISAWA, Yasushi MATSUNO, Nozomu HIROKUBO
  • Patent number: 8852754
    Abstract: Provided is an industrially excellent surface-treated copper foil which satisfies requirements for adhesiveness to an insulating resin such as polyimide, heat-resistant adhesiveness, chemical resistance and soft etching properties. Also provided is a method for producing a surface-treated copper foil which achieves a high adhesion strength between an insulating resin and the copper foil, shows high chemical resistance in circuit formation and sustains good soft etching properties after forming vias by laser-processing. A base copper foil is subjected to a roughening treatment to give a surface roughness (Rz) of 1.1 ?m or below. On the roughened surface, an Ni—Zn alloy layer is formed. The aforesaid roughening treatment is conducted in such a manner that the roughened surface comprises sharp-pointed convexes, which have a width of 0.3-0.8 ?m, a height of 0.6-1.8 ?m and an aspect ratio of 1.2-3.5, and the surface roughness (Rz) of said base copper foil is increased by 0.05-0.3 ?m.
    Type: Grant
    Filed: January 21, 2011
    Date of Patent: October 7, 2014
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Satoshi Fujisawa, Takeo Uno, Koichi Hattori
  • Patent number: 8557392
    Abstract: In order to provide a flexible laminate circuit board using a surface treated copper foil satisfying all of a bonding strength of a copper foil with respect to polyimide, acid resistance, and etching property, in a flexible laminate circuit board formed by a copper foil on the surface of a polyimide resin layer, the copper foil is a surface treated copper foil formed by depositing an Ni—Zn alloy onto at least one surface of a untreated copper foil, and the Zn deposition amount in the deposited Ni—Zn alloy is 6% or more and 15% or less of the (Ni deposition amount+Zn deposition amount), and the Zn deposition amount is 0.08 mg/dm2 or more to provide a flexible copper clad laminate.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: October 15, 2013
    Assignees: Furukawa Electric Co., Ltd., Nippon Steel & Sumikin Chemical Co., Ltd.
    Inventors: Satoshi Fujisawa, Yuji Suzuki, Takeo Uno, Koichi Hattori, Naoya Kuwasaki
  • Patent number: 8512873
    Abstract: To provide a surface treated copper foil satisfying all of the bonding strength to polyimide film, chemical resistance, and etching property, and to provide a CCL using the surface treated copper foil, a surface treated copper foil is formed being comprising an untreated copper foil on at least one surface of which Ni—Zn alloy is deposited, wherein Zn content (wt %)=Zn deposition amount/(Ni deposition amount+Zn deposition amount)×100 is 6% or more and 15% or less, and Zn deposition amount is 0.08 mg/dm2 or more, or, a CCL is formed being comprising a surface treated copper foil and a polyimide film laminated on the surface treated copper foil, wherein the surface treated copper foil comprises an untreated copper foil on at least one surface of which Ni—Zn alloy is deposited, Zn content (wt %)=Zn deposition amount/(Ni deposition amount+Zn deposition amount)×100 is 6% or more and 15% or less, and Zn deposition amount is 0.08 mg/dm2 or more.
    Type: Grant
    Filed: July 22, 2009
    Date of Patent: August 20, 2013
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Satoshi Fujisawa, Yuji Suzuki, Takeo Uno
  • Publication number: 20130084463
    Abstract: Disclosed is a surface-roughened copper foil that can show excellent adhesion to an anisotropic conductive resin (ACF) and a copper-clad laminate using same. Specifically disclosed is a surface-roughened copper foil which is surface-roughened by surface roughening on at least one surface of a base copper foil (untreated copper foil), wherein the roughening treated surface is finished so that a surface roughness (Ra) of 0.28 ?m or more of the adhesion surface of a polyimide film to be adhered to the roughening treated surface.
    Type: Application
    Filed: June 14, 2011
    Publication date: April 4, 2013
    Applicant: Furukawa Electric Co., Ltd.
    Inventor: Satoshi Fujisawa
  • Publication number: 20130040162
    Abstract: Provided is an industrially excellent surface-treated copper foil which satisfies requirements for adhesiveness to an insulating resin such as polyimide, heat-resistant adhesiveness, chemical resistance and soft etching properties. Also provided is a method for producing a surface-treated copper foil which achieves a high adhesion strength between an insulating resin and the copper foil, shows high chemical resistance in circuit formation and sustains good soft etching properties after forming vias by laser-processing. A base copper foil is subjected to a roughening treatment to give a surface roughness (Rz) of 1.1 ?m or below. On the roughened surface, an Ni—Zn alloy layer is formed. The aforesaid roughening treatment is conducted in such a manner that the roughened surface comprises sharp-pointed convexes, which have a width of 0.3-0.8 ?m, a height of 0.6-1.8 ?m and an aspect ratio of 1.2-3.5, and the surface roughness (Rz) of said base copper foil is increased by 0.05-0.3 ?m.
    Type: Application
    Filed: January 21, 2011
    Publication date: February 14, 2013
    Applicant: Furukawa Electric Co. Ltd
    Inventors: Satoshi Fujisawa, Takeo Uno, Koichi Hattori
  • Publication number: 20120285734
    Abstract: Provided is a roughened copper foil which has excellent properties in forming a fine patterned-circuit and good transmission properties in a high-frequency range and show high adhesiveness to a resin base and good chemical resistance. A surface-roughened copper foil, which is obtained by roughening at least one face of a base copper foil (untreated copper foil) so as to increase the surface roughness (Rz) thereof, relative to the surface roughness (Rz) of said base copper foil, by 0.05-0.3 ?m and has a roughened surface with a surface roughness (Rz) after roughening of 1.1 ?m or less, wherein said roughened surface comprises roughed grains in a sharp-pointed convex shape which have a width of 0.3-0.8 ?m, a height of 0.4-1.8 ?m and an aspect ratio [height/width] of 1.2-3.5.
    Type: Application
    Filed: January 21, 2011
    Publication date: November 15, 2012
    Applicant: Furukawa Electric Co., Ltd.
    Inventors: Takeo Uno, Satoshi Fujisawa
  • Publication number: 20110189501
    Abstract: In order to provide a flexible laminate circuit board using a surface treated copper foil satisfying all of a bonding strength of a copper foil with respect to polyimide, acid resistance, and etching property, in a flexible laminate circuit board formed by a copper foil on the surface of a polyimide resin layer, the copper foil is a surface treated copper foil formed by depositing an Ni—Zn alloy onto at least one surface of a untreated copper foil, and the Zn deposition amount in the deposited Ni—Zn alloy is 6% or more and 15% or less of the (Ni deposition amount+Zn deposition amount), and the Zn deposition amount is 0.08 mg/dm2 or more to provide a flexible cupper clad laminate.
    Type: Application
    Filed: July 22, 2009
    Publication date: August 4, 2011
    Applicants: Furukawa Electric Co., Ltd., Nippon Steel Chemical Co., LTD.
    Inventors: Satoshi Fujisawa, Yuji Suzuki, Takeo Uno, Koichi Hattori, Naoya Kuwasaki
  • Publication number: 20110189499
    Abstract: To provide a surface treated copper foil satisfying all of the bonding strength to polyimide film, chemical resistance, and etching property, and to provide a CCL using the surface treated copper foil, a surface treated copper foil is formed being comprising an untreated copper foil on at least one surface of which Ni—Zn alloy is deposited, wherein Zn content (wt %)=Zn deposition amount/(Ni deposition amount+Zn deposition amount)×100 is 6% or more and 15% or less, and Zn deposition amount is 0.08 mg/dm2 or more, or, a CCL is formed being comprising a surface treated copper foil and a polyimide film laminated on the surface treated copper foil, wherein the surface treated copper foil comprises an untreated copper foil on at least one surface of which Ni—Zn alloy is deposited, Zn content (wt %)=Zn deposition amount/(Ni deposition amount+Zn deposition amount)×100 is 6% or more and 15% or less, and Zn deposition amount is 0.08 mg/dm2 or more.
    Type: Application
    Filed: July 22, 2009
    Publication date: August 4, 2011
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Satoshi Fujisawa, Yuji Suzuki, Takeo Uno
  • Patent number: 7985488
    Abstract: An ultrathin copper foil with a carrier not causing blistering at a release layer interface, having a low carrier peeling force, friendly to the environment, and enabling easy peeling of a carrier foil and an ultrathin copper foil even under a high temperature environment and a printed circuit board enabling a stable production quality of a base of a printed circuit board for fine pattern applications using the ultrathin copper foil with the carrier, that is, a ultrathin copper foil with a carrier comprising a carrier foil, a diffusion prevention layer, a release layer, and an ultrathin copper foil, wherein the release layer is formed by a metal A for retaining a release property and a metal B for facilitating plating of the ultrathin copper foil, a content “a” of the metal A and a content “b” of the metal B forming the release layer satisfying an equation: 10?a/(a+b)*100?70 and a printed circuit board prepared by using such a ultrathin copper foil with a carrier.
    Type: Grant
    Filed: June 30, 2010
    Date of Patent: July 26, 2011
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Yuuji Suzuki, Takami Moteki, Kazuhiro Hoshino, Satoshi Fujisawa, Akira Kawakami
  • Patent number: 7892655
    Abstract: An ultrathin copper foil with a carrier not causing blistering at a release layer interface, having a low carrier peeling force, friendly to the environment, and enabling easy peeling of a carrier foil and an ultrathin copper foil even under a high temperature environment and a printed circuit board enabling a stable production quality of a base of a printed circuit board for fine pattern applications using the ultrathin copper foil with the carrier, that is, an ultrathin copper foil with a carrier comprising a carrier foil, a release layer, and an ultrathin copper foil, wherein the release layer is formed by a metal A for retaining a release property and a metal B for facilitating plating of the ultrathin copper foil, a content a of the metal A and a content b of the metal B forming the release layer satisfying an equation: 10?a/(a+b)*100?70 and a printed circuit board prepared by using such an ultrathin copper foil with a carrier.
    Type: Grant
    Filed: December 14, 2006
    Date of Patent: February 22, 2011
    Assignee: The Furukawa Electric Co., Ltd.
    Inventors: Yuuji Suzuki, Takami Moteki, Kazuhiro Hoshino, Satoshi Fujisawa, Akira Kawakami
  • Publication number: 20100270063
    Abstract: An ultrathin copper foil with a carrier not causing blistering at a release layer interface, having a low carrier peeling force, friendly to the environment, and enabling easy peeling of a carrier foil and an ultrathin copper foil even under a high temperature environment and a printed circuit board enabling a stable production quality of a base of a printed circuit board for fine pattern applications using the ultrathin copper foil with the carrier, that is, a ultrathin copper foil with a carrier comprising a carrier foil, a diffusion prevention layer, a release layer, and an ultrathin copper foil, wherein the release layer is formed by a metal A for retaining a release property and a metal B for facilitating plating of the ultrathin copper foil, a content “a” of the metal A and a content “b” of the metal B forming the release layer satisfying an equation: 10?a/(a+b)*100?70 and a printed circuit board prepared by using such a ultrathin copper foil with a carrier.
    Type: Application
    Filed: June 30, 2010
    Publication date: October 28, 2010
    Applicant: THE FURUKAWA ELECTRIC CO., LTD.
    Inventors: Yuuji Suzuki, Takami Moteki, Kazuhiro Hoshino, Satoshi Fujisawa, Akira Kawakami
  • Patent number: 7771841
    Abstract: An ultrathin copper foil with a carrier not causing blistering at a release layer interface, having a low carrier peeling force, friendly to the environment, and enabling easy peeling of a carrier foil and an ultrathin copper foil even under a high temperature environment and a printed circuit board enabling a stable production quality of a base of a printed circuit board for fine pattern applications using the ultrathin copper foil with the carrier, that is, a ultrathin copper foil with a carrier comprising a carrier foil, a diffusion prevention layer, a release layer, and an ultrathin copper foil, wherein the release layer is formed by a metal A for retaining a release property and a metal B for facilitating plating of the ultrathin copper foil, a content a of the metal A and a content b of the metal B forming the release layer satisfying an equation: 10?a/(a+b)*100?70 and a printed circuit board prepared by using such a ultrathin copper foil with a carrier.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: August 10, 2010
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Yuuji Suzuki, Takami Moteki, Kazuhiro Hoshino, Satoshi Fujisawa, Akira Kawakami