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. 19, 2025
Filed:
Mar. 25, 2020
Applicant:
Eastman Chemical Company, Kingsport, TN (US);
Inventors:
Marcus David Shelby, Fall Branch, TN (US);
Robert E. Mccrary, Kingsport, TN (US);
Thomas Joseph Pecorini, Kingsport, TN (US);
Michael Gage Armstrong, Johnson City, TN (US);
Douglas Weldon Carico, Kingsport, TN (US);
Michael Eugene Donelson, Kingsport, TN (US);
Assignee:
Eastman Chemical Company, Kingsport, TN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 1/14 (2015.01); C09D 169/00 (2006.01); G06F 3/041 (2006.01);
U.S. Cl.
CPC ...
G02B 1/14 (2015.01); C09D 169/00 (2013.01); G06F 3/0412 (2013.01); G06F 2203/04103 (2013.01);
Abstract
Provided is an optically clear protective cover plate for Human Machine Interface (HMI) touch panel displays wherein the cover plate is formed from a thermoplastic polymer comprising a high melt flow polycarbonate. The polycarbonate is characterized by a melt flow rate (MFR), or melt flow index (MFI), of between about 60 and about 80 g/10 min (ASTM D-1238, 300° C./1.2 kg).