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:
Aug. 07, 2018
Filed:
Sep. 25, 2015
Samsung Display Co. Ltd., Yongin-si, KR;
Enf Technology Co., Ltd., Seoul, KR;
Jae Woo Jeong, Suwon-si, KR;
Hong Sick Park, Suwon-si, KR;
Bong Kyun Kim, Hwaseong-si, KR;
Seung Ho Yoon, Hwaseong-si, KR;
Sang Dai Lee, Asan-si, KR;
Young Jin Park, Asan-si, KR;
Hyo Won Park, Asan-si, KR;
Sang Moon Yun, Asan-si, KR;
Samsung Display Co., Ltd., Yongin-si, KR;
ENF TECHNOLOGY CO., LTD., Seoul, KR;
Abstract
Provided is a method for manufacturing a glycol based compound. The method comprises agitating a mixture of a first glycol based compound, a hydrazide based compound, and a sulfonic acid based compound, and performing fractional distillation of resultant materials of the agitating to recover a second glycol based compound having a formaldehyde content of 0 ppm.