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:
Mar. 10, 2026
Filed:
Jan. 10, 2023
Cantops Co., Ltd., Gyeonggi-do, KR;
Hak Seo Oh, Gyeonggi-do, KR;
Jin Hwan Ko, Seoul, KR;
Sung Ik Kim, Gyeonggi-do, KR;
Sung Hyuk Youn, Incheon, KR;
Youl Kwon Sung, Gyeonggi-do, KR;
Hee Hyun Seo, Gyeonggi-do, KR;
Seung Hwan Lee, Gyeonggi-do, KR;
Deok Ha Lee, Gyeonggi-do, KR;
Se Hun Lee, Gyeonggi-do, KR;
Hyeong Cheol Choi, Gyeonggi-do, KR;
CANTOPS CO., LTD., Gyeonggi-do, KR;
Abstract
A hoist communication device in a rail car of an automated material handling system in which a master communication unit and a slave communication unit perform power line communication through one power supply line provided on a belt and a rail car controller connected to the master communication unit is individually communicated with a plurality of gripper devices connected to the slave communication unit using different carrier frequencies.