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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 12291686 B1

PDFFull Text
Date of Patent:
May. 06, 2025

Filed:

Mar. 19, 2020

Lubricating oil compositions for automatic transmissions

Applicant:

Chevron Japan Ltd., Minato-ku, JP;

Inventors:

Koichi Kubo, Kanagawa, JP;

Masami Fuchi, Makinohara, JP;

Naoya Sasaki, Omaezaki, JP;

Takahiro Nakagawa, Omaezaki, JP;

Satoshi Ohta, Omaezaki, JP;

Assignee:

CHEVRON JAPAN LTD., Minato-Ku, JP;

Attorneys:

STEVEN CHRISTIAN

FRANK TURNER

MARK WARZEL

MELISSA PATANGIA

ANDREA TRAN

CHRISTOPHER NORTHCUTT

ANA JAQUEZ

HOWARD OWENS

PARUL ANDERSON

SUNG PIO

TERRENCE FLAHERTY

RYAN DANIEL GUM

JASON GUERRERO

MARIE CLAPP

AVERY CATE

Primary Examiner:

Vishal V Vasisth

Int. Cl.
CPC ...
C10M 133/44 (2005.12); C10M 135/36 (2005.12); C10M 137/08 (2005.12); C10N 20/02 (2005.12); C10N 30/06 (2005.12); C10N 30/12 (2005.12); C10N 40/04 (2005.12);
U.S. Cl.
CPC ...
C10M 133/44 (2012.12); C10M 135/36 (2012.12); C10M 137/08 (2012.12); C10M 2215/223 (2012.12); C10M 2219/106 (2012.12); C10M 2223/043 (2012.12); C10M 2223/049 (2012.12); C10N 2020/02 (2012.12); C10N 2030/06 (2012.12); C10N 2030/12 (2012.12); C10N 2040/042 (2020.04);
Abstract

The present invention generally relates to lubricating oil compositions useful for automatic transmissions, and particularly transmission oils for automotive automatic transmissions in battery electrical vehicles (BEVs), hybrid vehicles (HVs) and plug-in hybrid vehicles (PHVs). The lubricant is free of metal compounds (e.g., Ca, Mo, or Zn) and demonstrates high volume resistivity, wear protection, and copper corrosion resistance.

Find Patent Forward Citations

Kubo, Koichi. (2025). Lubricating oil compositions for automatic transmissions (U.S. Patent No. 12291686). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/12291686

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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