Patents by Inventor Kentaro Koumura

Kentaro Koumura 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).

  • GREASE AND METHOD FOR SOFTENING GREASE
    Publication number: 20150045273
    Abstract: A grease of the invention includes: a base oil containing hydrocarbon; and diurea that is represented by a formula (1) below as a thickener and is in a range from 15 mass % to 25 mass % based on a total amount of a composition, the grease exhibiting a worked penetration in a range from 170 to 295. R1NHCONHR2NHCONHR3 ??(1) In the formula, R1 and R3 are mutually different and represent a hydrocarbon group having 6 to 18 carbon atoms; and R2 is a divalent aromatic hydrocarbon group having 6 to 13 carbon atoms.
    Type: Application
    Filed: February 19, 2013
    Publication date: February 12, 2015
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventors: Hiroki Sekiguchi, Kentaro Koumura, Yoshiyuki Suetsugu, Yusuke Nakanishi, Yukitoshi Fujinami