Patents by Inventor Hideki Akimoto

Hideki Akimoto 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: 20240123654
    Abstract: Provided is a separation and recovery apparatus for continuously separating and recovering, from a resin mixture containing a resin containing a hydrolyzable polymer and a resin containing a nonhydrolyzable polymer, a hydrolytic component a of the hydrolyzable polymer A and the nonhydrolyzable polymer B, the apparatus including: a crushing unit that crushes the resin mixture a melting/discharging unit that melts a crushed product obtained by the crushing unit to form a fluid and discharges the fluid at a high pressure; and a hydrothermal reaction treatment unit that continuously subjects the fluid discharged from the melting/discharging unit to a hydrothermal reaction treatment, wherein, in the melting/discharging unit, the hydrolyzable polymer A is hydrolyzed, and the hydrolytic component a thereof is dissolved and transferred into water permeating a sintered alloy diaphragm, thereby separating the nonhydrolyzable polymer B.
    Type: Application
    Filed: December 15, 2023
    Publication date: April 18, 2024
    Applicant: TOPPAN INC.
    Inventors: Masaru WATANABE, Aritomo YAMAGUCHI, Osamu SATO, Yuuma IRISA, Akira TAKAMA, Kousuke NISHIMURA, Hiroki KUJIRAOKA, Hideki MIYAZAKI, Keita AKIMOTO, Takuya TAKAHATA, Daisuke KUGIMOTO, Shingo KOUDA, Satoshi HAMURA, Takahiro IMAI, Yumiko OMORI, Manabu KAWA
  • Patent number: 9224885
    Abstract: Embodiments of the invention relate to a silicon semiconductor device, and a conductive paste for use in the front side of a solar cell device.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: December 29, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Hideki Akimoto, Takuya Konno, Giovanna Laudisio, Patricia J. Ollivier, Michael Rose, Jerome David Smith, Richard John Sheffield Young
  • Patent number: 9082901
    Abstract: A method for manufacturing a solar cell, comprising steps of: a) providing a semiconductor substrate having a light-receiving side and a back side, wherein a passivation layer is formed on the back side; b) forming a silver conductor pattern on the back side of the semiconductor substrate; c) forming an aluminum conductor pattern on the back side of the semiconductor substrate, at least part of the aluminum conductor pattern being superimposed on at least part of the silver conductor pattern; and d) firing the silver conductor pattern and the aluminum conductor pattern at the same time, thereby forming an electric contact between the semiconductor substrate and the aluminum conductor pattern by way of fire through in a region where the silver conductor pattern and the aluminum conductor pattern are superimposed.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: July 14, 2015
    Assignee: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: Hideki Akimoto, Chieko Kikuchi
  • Publication number: 20150007874
    Abstract: A back-contact solar cell module, comprising: silicon wafer having a sunlight receiving surface and a rear surface, wherein n+ region and p+ region are formed on the rear surface; an n+ electrode formed on the n+ region of the silicon wafer; a p+ electrode formed on the p+ region of the silicon wafer; a printed wiring board comprising a substrate, a cathode and an anode, being placed in a way that the anode and the cathode are in contact with the n+ electrode and the p+ electrode respectively; wherein at least one of the n+ electrode and the p+ electrode, prior to firing, comprises a conductive composition comprising 11.0-39.9 wt % of silver particles, 10.0-40.0 wt % of glass frit, and 0.5-20.0 wt % of palladium particles, based on total weight of the composition.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 8, 2015
    Inventors: ISAO HAYASHI, HIDEKI AKIMOTO
  • Publication number: 20140048752
    Abstract: The present invention relates to a method of manufacturing a solar cell electrode, comprising: preparing a semiconductor substrate having a preformed electrode on a front side, a back side, or both of the front and the back side of the semiconductor substrate; applying a conductive paste onto the preformed electrode, wherein the conductive paste comprises a conductive powder, an amorphous saturated polyester resin with glass transitional temperature (Tg) of 50° C. or lower, and an organic solvent; drying the applied conductive paste; putting a tab electrode on the dried conductive paste; and soldering the tab electrode.
    Type: Application
    Filed: April 10, 2013
    Publication date: February 20, 2014
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: HIDEKI AKIMOTO
  • Publication number: 20130340821
    Abstract: Embodiments of the invention relate to a silicon semiconductor device, and a conductive paste for use in the front side of a solar cell device.
    Type: Application
    Filed: March 13, 2013
    Publication date: December 26, 2013
    Applicant: EI DU PONT DE NEMOURS AND COMPANY
    Inventors: Hideki AKIMOTO, Takuya KONNO, Giovanna LAUDISIO, Patricia J. OLLIVIER, Michael ROSE, Jerome David SMITH, Richard John Sheffield YOUNG
  • Publication number: 20130273687
    Abstract: A method for manufacturing a solar cell, comprising steps of: a) providing a semiconductor substrate having a light-receiving side and a back side, wherein a passivation layer is formed on the back side; b) forming a silver conductor pattern on the back side of the semiconductor substrate; c) forming an aluminum conductor pattern on the back side of the semiconductor substrate, at least part of the aluminum conductor pattern being superimposed on at least part of the silver conductor pattern; and d) firing the silver conductor pattern and the aluminum conductor pattern at the same time, thereby forming an electric contact between the semiconductor substrate and the aluminum conductor pattern by way of fire through in a region where the silver conductor pattern and the aluminum conductor pattern are superimposed.
    Type: Application
    Filed: March 12, 2013
    Publication date: October 17, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: HIDEKI AKIMOTO, Chieko kikuchi
  • Patent number: 8502067
    Abstract: The present invention relates to a method of manufacturing a solar cell electrode, comprising: preparing a semiconductor substrate having a preformed electrode on a front side, a back side, or both of the front and the back side of the semiconductor substrate; applying a conductive paste onto the preformed electrode, wherein the conductive paste comprises a conductive powder, an amorphous saturated polyester resin with glass transitional temperature (Tg) of 50° C. or lower, and an organic solvent; drying the applied conductive paste; putting a tab electrode on the dried conductive paste; and soldering the tab electrode.
    Type: Grant
    Filed: August 14, 2012
    Date of Patent: August 6, 2013
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Hideki Akimoto
  • Publication number: 20130183795
    Abstract: A method of manufacturing a solar cell back side electrode comprising: (a) preparing a substrate comprising a semiconductor layer and a passivation layer formed on the back side of the semiconductor layer, wherein the passivation layer has one or more openings; (b) applying, onto the back side of the substrate, an aluminum paste comprising, (i) an aluminum powder, (ii) a glass frit comprising 30 to 70 cation mole percent of lead, 1 to 40 cation mole percent of silicon and 10 to 65 cation mole percent of boron, and 1 to 25 cation mole percent of aluminum, based on the total mole of cationic components in the glass frit, and (iii) an organic medium, wherein the aluminum paste covers the openings; and (c) firing the aluminum paste in a furnace, wherein the aluminum paste does not fire through the passivation layer during the firing.
    Type: Application
    Filed: September 13, 2012
    Publication date: July 18, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventors: HIDEKI AKIMOTO, Michael F. Barker, Chieko Kikuchi
  • Patent number: 8482089
    Abstract: Embodiments of the invention relate to a silicon semiconductor device, and a conductive paste for use in the front side of a solar cell device.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: July 9, 2013
    Assignee: E I du Pont de Nemours and Company
    Inventors: Hideki Akimoto, Takuya Konno, Giovanna Laudisio, Patricia J. Ollivier, Michael Rose, Jerome David Smith, Richard John Sheffield Young
  • Publication number: 20130068827
    Abstract: The present invention relates to a method of manufacturing a solar cell electrode, comprising: preparing a semiconductor substrate having a preformed electrode on a front side, a back side, or both of the front and the back side of the semiconductor substrate; applying a conductive paste onto the preformed electrode, wherein the conductive paste comprises a conductive powder, an amorphous saturated polyester resin with glass transitional temperature (Tg) of 50° C. or lower, and an organic solvent; drying the applied conductive paste; putting a tab electrode on the dried conductive paste; and soldering the tab electrode.
    Type: Application
    Filed: August 14, 2012
    Publication date: March 21, 2013
    Applicant: E I DU PONT DE NEMOURS AND COMPANY
    Inventor: HIDEKI AKIMOTO
  • Patent number: 8263858
    Abstract: This invention relates to an electrode used in a solar cell that exhibits good conductivity at the N layer and P layer and to a conductive paste used for producing such an electrode.
    Type: Grant
    Filed: April 6, 2010
    Date of Patent: September 11, 2012
    Assignee: E I du Pont de Nemours and Company
    Inventor: Hideki Akimoto
  • Publication number: 20120199192
    Abstract: Embodiments of the invention relate to a silicon semiconductor device, and a conductive paste for use in the front side of a solar cell device.
    Type: Application
    Filed: April 13, 2012
    Publication date: August 9, 2012
    Applicant: E. I. DU PONT DE NEMOURS AND COMPANY
    Inventors: HIDEKI AKIMOTO, Takuya Konno, Giovanna Laudisio, Patricia J. Ollivier, Michael Rose, Jerome David Smith, Richard John Sheffield Young
  • Patent number: 8178007
    Abstract: A method for producing a solar cell electrode, comprising the steps of: applying on at least part of a light-receiving surface of a semiconductor substrate a conductive paste comprising conductive component, glass frit, and resin binder, wherein the conductive component comprises alloy particles comprising silver and a metal selected from the group consisting of Pd, Ir, Pt, Ru, Ti, and Co; and firing the conductive paste.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: May 15, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Hideki Akimoto
  • Patent number: 8168886
    Abstract: Disclosed is a back contact-type solar cell wherein both of n+-type layer and p+-type layer are formed in the opposite side from a sunlight receiving side, wherein an electrode formed on the opposite side comprises a conductive component comprising silver and an added metal selected from the group consisting of Mo, Tc, Ru, Rh, Pd, W, Re, Os, Ir and Pt.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: May 1, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Hideki Akimoto
  • Patent number: 8158504
    Abstract: Embodiments of the invention relate to a silicon semiconductor device, and a conductive paste for use in the front side of a solar cell device.
    Type: Grant
    Filed: May 28, 2009
    Date of Patent: April 17, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventors: Hideki Akimoto, Takuya Konno, Giovanna Laudisio, Patricia J. Ollivier, Michael Rose, Jerome David Smith, Richard John Sheffield Young
  • Patent number: 8148630
    Abstract: A method for producing a solar cell electrode, comprising the steps of: applying on at least part of a light-receiving surface of a semiconductor substrate a conductive paste comprising conductive component, glass frit, and resin binder, wherein the conductive component comprises silver particles and core-shell particles in which a metal selected from the group consisting of Pd, Ir, Pt, Ru, Ti, and Co is coated on a surface of silver or copper; and firing the conductive paste.
    Type: Grant
    Filed: May 19, 2011
    Date of Patent: April 3, 2012
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Hideki Akimoto
  • Patent number: 8138415
    Abstract: Disclosed is a method for producing a solar cell electrode, comprising the steps of: (1) applying a paste comprising (a) electrically conductive particles containing silver particle having a particle size of 0.1 to 10 microns and an added particle comprising particles loaded with metal particles selected from the group consisting of Mo, Tc, Ru, Rh, Pd, W, Re, Os, Ir and Pt particles onto the opposite side from the light receiving side of a back contact-type solar cell substrate, wherein content of the silver particle is 40 to 90 wt %, and content of the added particle is 0.01 to 10 wt % based on the weight of the paste; and (2) firing the applied paste.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: March 20, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Hideki Akimoto
  • Patent number: 8134068
    Abstract: Disclosed is a method for producing a solar cell electrode, comprising the steps of: (1) applying a paste comprising (a) electrically conductive particles containing silver particle having a particle size of 0.1 to 10 microns and an added particle comprising a metal alloy comprising metal particles selected from the group consisting of Mo, Tc, Ru, Rh, Pd, W, Re, Os, Ir and Pt particles onto the opposite side from the light receiving side of a back contact-type solar cell substrate, wherein content of the silver particle is 40 to 90 wt %, and content of the added particle is 0.01 to 10 wt % based on the weight of the paste; and (2) firing the applied paste.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: March 13, 2012
    Assignee: E.I. du Pont de Nemours and Company
    Inventor: Hideki Akimoto
  • Patent number: 8101854
    Abstract: A p-type electrode on p+ layer of solar cell comprising, prior to firing; (a) Electrically conductive particles comprising silver particle having a particle size of 0.1 to 10 microns and added particle composed of a metal particle supported by carbon particles, wherein the metal particle is selected from the group consisting of Mo, Tc, Ru, Rh, Pd, W, Re, Os, Ir and Pt particle, (b) Glass frit, and (c) A resin binder, wherein the electrode is made from a fired conductive paste which is comprised of 40 to 90 wt % of the silver particle and 0.01 to 10 wt % of the added particle based on the weight of the paste.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: January 24, 2012
    Assignee: E. I. du Pont de Nemours and Company
    Inventor: Hideki Akimoto