Patents by Inventor Kazuyoshi YONEDA

Kazuyoshi YONEDA 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).

  • Photosensitive resin composition, dry film thereof, and printed wiring board using them
    Patent number: 8962712
    Abstract: An alkali-developable photosensitive resin composition comprises a carboxyl group-containing urethane resin having a biphenyl novolak structure, a photopolymerization initiator, and aluminum hydroxide and/or a phosphorus-containing compound. The composition may be formulated as a photocurable and thermosetting resin composition by further incorporating therein a thermosetting component having a plurality of cyclic ether groups and/or cyclic thioether groups in the molecule, besides the components described above. The photosensitive resin composition may further contain a colorant.
    Type: Grant
    Filed: June 14, 2012
    Date of Patent: February 24, 2015
    Assignee: Taiyo Holdings Co., Ltd.
    Inventors: Nobuhito Ito, Kazuyoshi Yoneda, Masao Arima
  • PHOTOSENSITIVE RESIN COMPOSITION, DRY FILM THEREOF, AND PRINTED WIRING BOARD USING THEM
    Publication number: 20120250268
    Abstract: An alkali-developable photosensitive resin composition comprises a carboxyl group-containing urethane resin having a biphenyl novolak structure, a photopolymerization initiator, and aluminum hydroxide and/or a phosphorus-containing compound. The composition may be formulated as a photocurable and thermosetting resin composition by further incorporating therein a thermosetting component having a plurality of cyclic ether groups and/or cyclic thioether groups in the molecule, besides the components described above. The photosensitive resin composition may further contain a colorant.
    Type: Application
    Filed: June 14, 2012
    Publication date: October 4, 2012
    Applicant: TAIYO HOLDINGS CO., LTD.
    Inventors: Nobuhito ITO, Kazuyoshi YONEDA, Masao ARIMA