Regioselectively substituted cellulose esters and films made therefrom
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United States of America Patent
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Jun 11, 2024
Grant Date -
Jul 27, 2023
app pub date -
Mar 27, 2023
filing date -
Apr 22, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
Regioselectively substituted cellulose esters having a plurality of pivaloyl substituents and a plurality of aryl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in films, such as +A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology.
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International Classification(s)
- 2023 Application Filing Year
- C08B Class
- 152 Applications Filed
- 34 Patents Issued To-Date
- 22.37 % Issued To-Date
Cited Art Landscape
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- 0 Citation Count
- C08B Class
- 0 % this patent is cited more than
- 1 Age
Maintenance Fees
| Fee | Large entity fee | small entity fee | micro entity fee | due date |
|---|---|---|---|---|
| 3.5 Year Payment | $1600.00 | $800.00 | $400.00 | Dec 11, 2027 |
| 7.5 Year Payment | $3600.00 | $1800.00 | $900.00 | Dec 11, 2031 |
| 11.5 Year Payment | $7400.00 | $3700.00 | $1850.00 | Dec 11, 2035 |
