Patents by Inventor Tomomi Hatta

Tomomi Hatta 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).

  • PERFLUOROPOLYETHER COMPOUND, LUBRICANT AND MAGNETIC DISK
    Publication number: 20220372395
    Abstract: Provided are a magnetic disk and, in particular, a compound which makes it possible to realize a lubricant having excellent heat resistance and solubility in a fluorine-based solvent. A perfluoropolyether compound in accordance with an aspect of the present invention has, in hydrocarbon groups at both terminals thereof, five or six hydroxyl groups in total.
    Type: Application
    Filed: June 15, 2020
    Publication date: November 24, 2022
    Inventors: Tomomi HATTA, Tsuyoshi SHIMIZU
  • Fluoropolyether compound, lubricant using same, and usage thereof
    Patent number: 11421172
    Abstract: Provided are a lubricant that is highly resistant to contamination and highly thermally stable, a lubricant that is highly durable and highly heat resistant, and a magnetic disk. A fluoropolyether compound contains perfluoropolyether groups, end groups each containing at least one hydroxyl group, and a linking group that is comprised of a C4-C14 hydrocarbon group and that contains at least one hydroxyl group.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: August 23, 2022
    Assignee: Moresco Corporation
    Inventors: Tomomi Hatta, Tsuyoshi Shimizu, Aya Inoue, Yasuo Sakane
  • FLUOROPOLYETHER COMPOUND, LUBRICANT USING SAME, AND USAGE THEREOF
    Publication number: 20190352573
    Abstract: Provided are a lubricant that is highly resistant to contamination and highly thermally stable, a lubricant that is highly durable and highly heat resistant, and a magnetic disk. A fluoropolyether compound contains perfluoropolyether groups, end groups each containing at least one hydroxyl group, and a linking group that is comprised of a C4-C14 hydrocarbon group and that contains at least one hydroxyl group.
    Type: Application
    Filed: January 17, 2018
    Publication date: November 21, 2019
    Applicant: Moresco Corporation
    Inventors: Tomomi HATTA, Tsuyoshi SHIMIZU, Aya INOUE, Yasuo SAKANE
  • Fluoropolyether compound, lubricant and magnetic disk each containing the same
    Patent number: 8734966
    Abstract: A compound of the formula (1), lubricant containing the compound and magnetic disk R1—C6H4O—CH2CH(OH)CH2OCH2—R2—CH2—O—R3??(1) wherein R1 is hydrogen, alkoxyl having 1 to 4 carbon atoms, amino or amido, R2 is —CF2O(CF2CF2O)x(CF2O)yCF2—, —CF2CF2O(CF2CF2CF2O)z—CF2CF2— or —CF2CF2CF2O(CF2CF2CF2CF2O)nCF2CF2CF2—, x and y are each an integer of 0 to 15, z is an integer of 1 to 15, n is an integer of 0 to 4, R3 is —CH2CH(OH)CH2OH, —CH2CH(OH)CH2OCH2CH(OH)CH2OH or —(CH2)mOH, m is an integer of 2 to 6.
    Type: Grant
    Filed: February 13, 2013
    Date of Patent: May 27, 2014
    Assignee: Moresco Corporation
    Inventors: Ryosuke Sagata, Tsuyoshi Shimizu, Tomomi Hatta, Nagayoshi Kobayashi