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. 13, 2015
Filed:
Dec. 26, 2011
Applicants:
Ju-sik Kang, Hwaswong-Si, KR;
Jeong-ho Park, Suwon-Si, KR;
Yu-mi Chang, Gwangju-Si, KR;
Inventors:
Assignee:
SK CHEMICALS CO., LTD., Seongnam-Si, KR;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C07C 251/30 (2006.01); C07F 5/04 (2006.01); G02B 5/22 (2006.01); G02B 5/20 (2006.01);
U.S. Cl.
CPC ...
G02B 5/22 (2013.01); C07C 251/30 (2013.01); C07F 5/04 (2013.01); G02B 5/208 (2013.01);
Abstract
Disclosed are a novel diimmonium-based compound that has low light absorption in visible light region and has superior light absorption efficiency in near infrared region, and has superior durability and weatherability, and a near infrared absorption filter using the same. The diimmonium-based compound is represented by the formula 1 of claim