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. 18, 2025
Filed:
Feb. 10, 2021
Applicant:
Eastman Chemical Company, Kingsport, TN (US);
Inventors:
Qianqian Zhang, Kingsport, TN (US);
Bin Wang, Kingsport, TN (US);
Robert Jacks Sharpe, Madison, AL (US);
Wesley Wayne McConnell, Gray, TN (US);
Casey Lynn Elkins, Kingsport, TN (US);
Charles Michael Buchanan, Bluff City, TN (US);
Assignee:
Eastman Chemical Company, Kingsport, TN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C08L 1/32 (2006.01); C08J 5/18 (2006.01); C08K 5/07 (2006.01); C08K 5/3492 (2006.01); G02B 5/30 (2006.01);
U.S. Cl.
CPC ...
C08L 1/32 (2013.01); C08J 5/18 (2013.01); C08K 5/07 (2013.01); C08K 5/3492 (2013.01); C08J 2301/32 (2013.01); C08L 2203/16 (2013.01); G02B 5/3083 (2013.01);
Abstract
The present application discloses films comprising regioselectively substituted cellulose esters and a component A wherein rings A, B, C, R, R, R, R, R, m, n, and k are defined herein. The films are C+ films that exhibit improved wavelength dispersion. <