Patents by Inventor Fumiharu YOKOYAMA

Fumiharu YOKOYAMA 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).

  • 5-METHYL-6-PHENYL-4,5-DIHYDRO-2H-PYRIDAZIN-3-ONE DERIVATIVE
    Publication number: 20210171472
    Abstract: The present invention provides an agent for treating malignant tumor, comprising a compound of formula (1): wherein R1 to R4 are hydrogen atom, halogen, or etc., Y is optionally-substituted alkylene group or etc.
    Type: Application
    Filed: February 23, 2021
    Publication date: June 10, 2021
    Applicant: Otsuka Pharmaceutical Co., Ltd.
    Inventors: Takahiro Katoh, Masatoshi Iida, Yuki Terauchi, Kazuya Yamaguchi, Toshiyuki Hirose, Fumiharu Yokoyama, Hikaru Nishimori, Yutaka Obuchi, Hiroshi Nabeshima, Emiri Takaki
  • 5-METHYL-6-PHENYL-4,5-DIHYDRO-2H-PYRIDAZIN-3-ONE DERIVATIVE
    Publication number: 20200181092
    Abstract: The present invention provides an agent for treating malignant tumor, comprising a compound of formula (1): wherein R1 to R4 are hydrogen atom, halogen, or etc., Y is optionally-substituted alkylene group or etc.
    Type: Application
    Filed: February 12, 2020
    Publication date: June 11, 2020
    Applicant: OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Takahiro KATOH, Masatoshi Iida, Yuki Terauchi, Kazuya Yamaguchi, Toshiyuki Hirose, Fumiharu Yokoyama, Hikaru Nishimori, Yutaka Obuchi, Hiroshi Nabeshima, Emiri Takaki
  • 5-methyl-6-phenyl-4,5-dihydro-2H-pyridazin-3-one derivative
    Patent number: 10611731
    Abstract: The present invention provides an agent for treating malignant tumor, comprising a compound of formula (1): wherein R1 to R4 are hydrogen atom, halogen, or etc., Y is optionally-substituted alkylene group or etc.
    Type: Grant
    Filed: March 2, 2017
    Date of Patent: April 7, 2020
    Assignee: OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Takahiro Katoh, Masatoshi Iida, Yuki Terauchi, Kazuya Yamaguchi, Toshiyuki Hirose, Fumiharu Yokoyama, Hikaru Nishimori, Yutaka Obuchi, Hiroshi Nabeshima, Emiri Takaki
  • 5-METHYL-6-PHENYL-4,5-DIHYDRO-2H-PYRIDAZIN-3-ONE DERIVATIVE
    Publication number: 20190023662
    Abstract: The present invention provides an agent for treating malignant tumor, comprising a compound of formula (1): wherein R1 to R4 are hydrogen atom, halogen, or etc., Y is optionally-substituted alkylene group or etc.
    Type: Application
    Filed: March 2, 2017
    Publication date: January 24, 2019
    Applicant: OTSUKA PHARMACEUTICAL CO., LTD.
    Inventors: Takahiro KATOH, Masatoshi IIDA, Yuki TERAUCHI, Kazuya YAMAGUCHI, Toshiyuki HIROSE, Fumiharu YOKOYAMA, Hikaru NISHIMORI, Yutaka OBUCHI, Hiroshi NABESHIMA, Emiri TAKAKI