Patents Assigned to Oronite Japan Limited
  • Low phosphorous engine oil compositions and additive compositions
    Patent number: 5629272
    Abstract: An engine oil composition which comprises a metal-containing detergent, zinc dithiophosphate, and a boron-containing ashless dispersant dissolved or dispersed in a base oil; characterized by further containing an antiwear agent having an aliphatic amide compound and either a dithiocarbamate compound or an ester derived from a fatty acid and boric acid.
    Type: Grant
    Filed: December 3, 1993
    Date of Patent: May 13, 1997
    Assignee: Oronite Japan Limited
    Inventors: Morikuni Nakazato, Jiro Magarifuchi, Yoshifumi Isozaki
  • Multipurpose functional fluid for agricultural machinery or construction machinery
    Patent number: 5607907
    Abstract: A biodegradable multipurpose functional fluid for agricultural or construction machinery, comprising a base oil, a detergent-dispersant and an antioxidant (and a viscosity index improver if desired), in which the base oil is a fatty acid triester of trimethylolpropane obtained from a fatty acid that either has from 40% to 70% by weight of caprylic acid and from 20% to 50% by weight of capric acid, or is derived from a coconut oil which has been adjusted to have a stearic acid content of from 10% to 20% by weight.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: March 4, 1997
    Assignee: Oronite Japan Limited
    Inventors: Hiroshi Watanabe, Michio Shiga, Satoshi Ohta