Patents by Inventor Koichi Kumai

Koichi Kumai 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: 10986293
    Abstract: A solid-state imaging device including a substrate having a surface, microlenses formed on the surface, and a concave lens formed between adjacent ones of the microlenses and having a concave shape directed toward the surface of the substrate.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: April 20, 2021
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventors: Koichi Kumai, Ryohei Gorai
  • Patent number: 10672928
    Abstract: A metal foil pattern layered body of the invention includes a base member; a metal foil including a metal pattern formed by an opening and a metal portion; and a protuberance provided at the metal foil and at a boundary between the opening and the metal portion.
    Type: Grant
    Filed: August 25, 2017
    Date of Patent: June 2, 2020
    Assignee: DSM IP ASSETS B.V.
    Inventors: Koichi Kumai, Ryuji Ueda, Takao Tomono, Takehito Tsukamoto
  • Patent number: 10651320
    Abstract: A method of manufacturing a circuit board includes: forming a plurality of metal electrodes so as to be separated from each other on a holding sheet by cutting a metal foil held on the holding sheet to remove a portion of the metal foil; forming adhesive layers on surfaces of the plurality of metal electrodes; adhering the adhesive layers to a base material by closely contacting the adhesive layers with the base material; and transcribing the adhesive layers and the plurality of metal electrodes onto the base material by detaching the holding sheet from the plurality of metal electrodes.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: May 12, 2020
    Assignee: DSM IP ASSETS B.V.
    Inventors: Koichi Kumai, Ryuji Ueda, Kentaro Kubota, Shigeki Kudo, Minoru Kawasaki
  • Publication number: 20190288127
    Abstract: A method of manufacturing a circuit board includes: forming a plurality of metal electrodes so as to be separated from each other on a holding sheet by cutting a metal foil held on the holding sheet to remove a portion of the metal foil; forming adhesive layers on surfaces of the plurality of metal electrodes; adhering the adhesive layers to a base material by closely contacting the adhesive layers with the base material; and transcribing the adhesive layers and the plurality of metal electrodes onto the base material by detaching the holding sheet from the plurality of metal electrodes.
    Type: Application
    Filed: May 2, 2019
    Publication date: September 19, 2019
    Inventors: Koichi KUMAI, Ryuji UEDA, Kentaro KUBOTA, Shigeki KUDO, Minoru KAWASAKI
  • Publication number: 20180269247
    Abstract: A solid-state imaging device including a substrate having a surface, microlenses formed on the surface, and a concave lens formed between adjacent ones of the microlenses and having a concave shape directed toward the surface of the substrate.
    Type: Application
    Filed: May 11, 2018
    Publication date: September 20, 2018
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Koichi KUMAI, Ryohei GORAI
  • Patent number: 10056517
    Abstract: A metal foil pattern layered body of the invention includes: a base member; a metal foil including a metal foil pattern formed by an opening and a metal portion; and a protuberance provided at the metal foil and at a boundary between the opening and the metal portion.
    Type: Grant
    Filed: December 5, 2013
    Date of Patent: August 21, 2018
    Assignee: DSM IP ASSETS B.V.
    Inventors: Koichi Kumai, Ryuji Ueda, Takao Tomono, Takehito Tsukamoto
  • Publication number: 20170358700
    Abstract: A metal foil pattern layered body of the invention includes a base member; a metal foil including a metal pattern formed by an opening and a metal portion; and a protuberance provided at the metal foil and at a boundary between the opening and the metal portion.
    Type: Application
    Filed: August 25, 2017
    Publication date: December 14, 2017
    Inventors: Koichi KUMAI, Ryuji UEDA, Takao TOMONO, Takehito TSUKAMOTO
  • Patent number: 9831567
    Abstract: In a manufacturing method of an aluminum wire crimp terminal formed by a base material made of a copper-based metal, at the step of forming an intermediate worked material having an unfolded shape of the crimp terminal, fine recessed parts for promoting the adhesive performance of the crimp terminal against a conductor of the wire are formed on a plate-body surface forming an inner face of a conductor crimping part of the intermediate worked material. Subsequently, a thin-film surface layer made of an aluminum-based metal is formed on at least the plate-body surface. Finally, the intermediate worked material is bent to a prescribed terminal shape.
    Type: Grant
    Filed: August 1, 2016
    Date of Patent: November 28, 2017
    Assignees: YAZAKI CORPORATION, Toppan Printing Co., Ltd.
    Inventors: Daisuke Miyakawa, Koichi Kumai
  • Publication number: 20170040713
    Abstract: In a manufacturing method of an aluminum wire crimp terminal formed by a base material made of a copper-based metal, at the step of forming an intermediate worked material having an unfolded shape of the crimp terminal, fine recessed parts for promoting the adhesive performance of the crimp terminal against a conductor of the wire are formed on a plate-body surface forming an inner face of a conductor crimping part of the intermediate worked material. Subsequently, a thin-film surface layer made of an aluminum-based metal is formed on at least the plate-body surface. Finally, the intermediate worked material is bent to a prescribed terminal shape.
    Type: Application
    Filed: August 1, 2016
    Publication date: February 9, 2017
    Applicants: YAZAKI CORPORATION, Toppan Printing Co., Ltd.
    Inventors: Daisuke MIYAKAWA, Koichi KUMAI
  • Publication number: 20170018660
    Abstract: A method of manufacturing a circuit board includes: forming a plurality of metal electrodes so as to be separated from each other on a holding sheet by cutting a metal foil held on the holding sheet to remove a portion of the metal foil; forming adhesive layers on surfaces of the plurality of metal electrodes; adhering the adhesive layers to a base material by closely contacting the adhesive layers with the base material; and transcribing the adhesive layers and the plurality of metal electrodes onto the base material by detaching the holding sheet from the plurality of metal electrodes.
    Type: Application
    Filed: September 27, 2016
    Publication date: January 19, 2017
    Inventors: Koichi KUMAI, Ryuji UEDA, Kentaro KUBOTA, Shigeki KUDO, Minoru KAWASAKI
  • Patent number: 9478674
    Abstract: A method of manufacturing a circuit board includes: forming a plurality of metal electrodes so as to be separated from each other on a holding sheet by cutting a metal foil held on the holding sheet to remove a portion of the metal foil; forming adhesive layers on surfaces of the plurality of metal electrodes; adhering the adhesive layers to a base material by closely contacting the adhesive layers with the base material; and transcribing the adhesive layers and the plurality of metal electrodes onto the base material by detaching the holding sheet from the plurality of metal electrodes.
    Type: Grant
    Filed: May 17, 2013
    Date of Patent: October 25, 2016
    Assignee: DSM IP ASSETS B.V.
    Inventors: Koichi Kumai, Ryuji Ueda, Kentaro Kubota, Shigeki Kudo, Minoru Kawasaki
  • Publication number: 20140090698
    Abstract: A metal foil pattern layered body of the invention includes: a base member; a metal foil including a metal foil pattern formed by an opening and a metal portion; and a protuberance provided at the metal foil and at a boundary between the opening and the metal portion.
    Type: Application
    Filed: December 5, 2013
    Publication date: April 3, 2014
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Koichi KUMAI, Ryuji UEDA, Takao TOMONO, Takehito TSUKAMOTO
  • Publication number: 20130247977
    Abstract: A method of manufacturing a circuit board includes: forming a plurality of metal electrodes so as to be separated from each other on a holding sheet by cutting a metal foil held on the holding sheet to remove a portion of the metal foil; forming adhesive layers on surfaces of the plurality of metal electrodes; adhering the adhesive layers to a base material by closely contacting the adhesive layers with the base material; and transcribing the adhesive layers and the plurality of metal electrodes onto the base material by detaching the holding sheet from the plurality of metal electrodes.
    Type: Application
    Filed: May 17, 2013
    Publication date: September 26, 2013
    Applicant: TOPPAN PRINTING CO., LTD.
    Inventors: Koichi Kumai, Ryuji Ueda, Kentaro Kubota, Shigeki Kudo, Minoru Kawasaki
  • Patent number: 6438281
    Abstract: A first clad layer is formed on a smooth support substrate via a release layer. On the first clad layer, a core through which light propagates and alignment marks are simultaneously formed. Further, these layers are covered with a second clad to obtain an optical wiring layer. Then, the optical wiring layer is released from the support substrate and stuck to a substrate having an electric wiring. Subsequently, on the resulting substrate are formed a mirror for reflecting light propagating through the core, pads for installing optical parts or the like, and via holes for electrically connecting the electric wiring on the substrate to the pads. For this formation, the alignment marks are used as references.
    Type: Grant
    Filed: March 30, 2000
    Date of Patent: August 20, 2002
    Assignee: Toppan Printing Co., Ltd.
    Inventors: Takehito Tsukamoto, Koichi Kumai, Takao Minato, Shigeru Hirayama, Masayuki Ode