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:
Oct. 20, 2009
Filed:
Nov. 08, 2006
Applicants:
Yang-ho Chenon, Gyeonggi-do, KR;
Young-gyo Choi, Gyeonggi-do, KR;
Inventors:
Yang-Ho Chenon, Gyeonggi-do, KR;
Young-Gyo Choi, Gyeonggi-do, KR;
Assignee:
Hyosung Corporation, Seoul, KR;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C07C 7/14 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for separating and purifying 2,6-dimethylnaphthalene, is provided in which 2,6-dimethylnaphthalene of high purity is obtained from a mixture of dimethylnaphthalene isomers with a high yield, by means of a combined process of column melt crystallization and sweating operation.