Patents by Inventor Kayoko AOYAMA

Kayoko AOYAMA 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).

  • Transmission lubricating oil composition
    Patent number: 10889779
    Abstract: Provided is a lubricating oil composition for a transmission having excellent gear properties, clutch properties, cooling properties, and electric insulating properties. The lubricating oil composition for a transmission preparing by blending (A) a base oil, (B) a viscosity index improver having a mass average molecular weight of 10,000 to 50,000, and (C-1) a polyamide and/or (C-2) a polyol ester, the base oil (A) including (A-1) a synthetic oil having a kinematic viscosity at 100° C. of 1.0 to 10.0 mm2/s.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: January 12, 2021
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventor: Kayoko Aoyama
  • Electric vehicle or hybrid vehicle lubricating oil composition
    Patent number: 10815447
    Abstract: Provided is a lubricating oil composition for electric vehicle or hybrid vehicle having excellent gear properties, clutch properties, cooling properties, and electric insulating properties. The lubricating oil composition for electric vehicle or hybrid vehicle preparing by blending (A) a base oi and (B-1) a polyamide and/or (B-2) a polyol ester, the base oil (A) including (A-1) a synthetic oil having a kinematic viscosity at 100° C. of 1.0 to 10.0 mm2/s.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: October 27, 2020
    Assignee: IDEMITSU KOSAN CO., LTD.
    Inventor: Kayoko Aoyama
  • TRANSMISSION LUBRICATING OIL COMPOSITION
    Publication number: 20180100119
    Abstract: Provided is a lubricating oil composition for a transmission having excellent gear properties, clutch properties, cooling properties, and electric insulating properties. The lubricating oil composition for a transmission preparing by blending (A) a base oil, (B) a viscosity index improver having a mass average molecular weight of 10,000 to 50,000, and (C-1) a polyamide and/or (C-2) a polyol ester, the base oil (A) including (A-1) a synthetic oil having a kinematic viscosity at 100° C. of 1.0 to 10.0 mm2/s.
    Type: Application
    Filed: January 25, 2016
    Publication date: April 12, 2018
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Kayoko AOYAMA
  • ELECTRIC VEHICLE OR HYBRID VEHICLE LUBRICATING OIL COMPOSITION
    Publication number: 20180079990
    Abstract: Provided is a lubricating oil composition for electric vehicle or hybrid vehicle having excellent gear properties, clutch properties, cooling properties, and electric insulating properties. The lubricating oil composition for electric vehicle or hybrid vehicle preparing by blending (A) a base of and (B-1) a polyamide and/or (B-2) a polyol ester, the base oil (A) including (A-1) a synthetic oil having a kinematic viscosity at 100° C. of 1.0 to 10.0 mm2/s.
    Type: Application
    Filed: January 25, 2016
    Publication date: March 22, 2018
    Applicant: IDEMITSU KOSAN CO., LTD.
    Inventor: Kayoko AOYAMA