Patents by Inventor Michio SERI

Michio SERI 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).

  • Magnetic recording medium, fluorine-containing ether compound and lubricant for magnetic recording medium
    Patent number: 11661478
    Abstract: A fluorine-containing ether compound of the present invention is represented by the following General Formula (1). (In the General Formula (1), X is a trivalent atom or a trivalent atom group, A is a linking group including at least one polar group, B is a linking group having a perfluoropolyether chain, and D is a polar group or a substituent having a polar group at the end.) [Chem.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: May 30, 2023
    Assignee: SHOWA DENKO K.K.
    Inventors: Takuya Minami, Yoshishige Okuno, Yuta Yamaguchi, Ryuuta Miyasaka, Naoya Fukumoto, Hiroko Hattori, Hiroyuki Tomita, Michio Seri, Naoko Ito, Ichiro Ota, Katsumi Murofushi
  • Fluorine-containing ether compound, lubricant for magnetic recording medium, and magnetic recording medium
    Patent number: 11555005
    Abstract: A fluorine-containing ether compound according to the present invention is a fluorine-containing ether compound represented by the following General Formula (1).
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: January 17, 2023
    Assignee: SHOWA DENKO K.K.
    Inventors: Naoya Fukumoto, Ryuuta Miyasaka, Hiroyuki Tomita, Michio Seri, Naoko Ito, Katsumi Murofushi
  • MAGNETIC RECORDING MEDIUM, FLUORINE-CONTAINING ETHER COMPOUND AND LUBRICANT FOR MAGNETIC RECORDING MEDIUM
    Publication number: 20200010619
    Abstract: A fluorine-containing ether compound of the present invention is represented by the following General Formula (1). (In the General Formula (1), X is a trivalent atom or a trivalent atom group, A is a linking group including at least one polar group, B is a linking group having a perfluoropolyether chain, and D is a polar group or a substituent having a polar group at the end.) [Chem.
    Type: Application
    Filed: February 6, 2018
    Publication date: January 9, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Takuya MINAMI, Yoshishige OKUNO, Yuta YAMAGUCHI, Ryuuta MIYASAKA, Naoya FUKUMOTO, Hiroko HATTORI, Hiroyuki TOMITA, Michio SERI, Naoko ITO, Ichiro OTA, Katsumi MUROFUSHI
  • FLUORINE-CONTAINING ETHER COMPOUND, LUBRICANT FOR MAGNETIC RECORDING MEDIUM, AND MAGNETIC RECORDING MEDIUM
    Publication number: 20200002258
    Abstract: A fluorine-containing ether compound according to the present invention is a fluorine-containing ether compound represented by the following General Formula (1). [Chem.
    Type: Application
    Filed: February 8, 2018
    Publication date: January 2, 2020
    Applicant: SHOWA DENKO K.K.
    Inventors: Naoya FUKUMOTO, Ryuuta MIYASAKA, Hiroyuki TOMITA, Michio SERI, Naoko ITO, Katsumi MUROFUSHI