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.:
Date of Patent:
Sep. 23, 2025
Filed:
Mar. 21, 2024
Applicants:
SK Innovation Co., Ltd., Seoul, KR;
SK Enmove Co., Ltd., Seoul, KR;
Inventors:
Young Wook Jeon, Daejeon, KR;
Jun Soo Park, Daejeon, KR;
Eun Kyoung Kim, Daejeon, KR;
Kyung Seok Noh, Daejeon, KR;
Assignees:
SK INNOVATION CO., LTD., Seoul, KR;
SK ENMOVE CO., LTD., Seoul, KR;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C10G 53/04 (2006.01); C10M 101/02 (2006.01); C10M 175/00 (2006.01); C10M 177/00 (2006.01); C10N 30/00 (2006.01); C10N 30/02 (2006.01); C10N 30/20 (2006.01); C10N 70/00 (2006.01);
U.S. Cl.
CPC ...
C10G 53/04 (2013.01); C10M 101/02 (2013.01); C10M 175/0033 (2013.01); C10M 175/005 (2013.01); C10M 175/0058 (2013.01); C10M 177/00 (2013.01); C10G 2300/1007 (2013.01); C10M 2203/1006 (2013.01); C10N 2030/02 (2013.01); C10N 2030/20 (2013.01); C10N 2030/41 (2020.05); C10N 2030/43 (2020.05); C10N 2070/00 (2013.01);
Abstract
A method of recycling waste lubricant. The method includes providing a waste lubricant-derived oil fraction, pretreating the waste lubricant-derived oil fraction, and hydrocracking the pretreated waste lubricant-derived oil fraction. The method has economic advantages in that waste lubricant can be recycled into fuel oil and high-grade lube base oil with a relatively high yield compared to a lube base oil manufacturing process utilizing only unconverted oil as a feedstock.