Regioselectively substituted cellulose esters
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jun 11, 2024
Grant Date -
Apr 13, 2023
app pub date -
Oct 13, 2022
filing date -
Mar 29, 2017
priority date (Note) -
In Force
status (Latency Note)
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Importance

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Abstract
The present application discloses regioselectively substituted cellulose esters, films made from the regioselectively substituted cellulose esters and methods for making the same. The regioselectively substituted cellulose esters are synthesized using trifluoroacetic anhydride and cellulose with various acyl donors or acyl donor precursors.
First Claim
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Family

- 15 United States
- 10 France
- 8 Japan
- 7 China
- 5 Korea
- 2 Other
Patent Owner(s)
Patent Owner | Address | |
---|---|---|
EASTMAN CHEMICAL COMPANY | 200 SOUTH WILCOX DRIVE KINGSPORT TN 37660 |
International Classification(s)

- 2022 Application Filing Year
- C08J Class
- 2006 Applications Filed
- 320 Patents Issued To-Date
- 15.96 % Issued To-Date
Inventor(s)
Inventor Name | Address | # of filed Patents | Total Citations |
---|---|---|---|
Elkins, Casey Lynn | Kingsport, US | 16 | 14 |
# of filed Patents : 16 Total Citations : 14 | |||
Sharpe, Robert Jacks | Johnson City, US | 18 | 27 |
# of filed Patents : 18 Total Citations : 27 | |||
Wang, Bin | Kingsport, US | 1095 | 9516 |
# of filed Patents : 1095 Total Citations : 9516 |
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Patent Citation Ranking
- 0 Citation Count
- C08J Class
- 0 % this patent is cited more than
- 1 Age
Forward Cite Landscape
- No Forward Cites to Display

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 |
Fee | Large entity fee | small entity fee | micro entity fee |
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Surcharge - 3.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 7.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge - 11.5 year - Late payment within 6 months | $160.00 | $80.00 | $40.00 |
Surcharge after expiration - Late payment is unavoidable | $700.00 | $350.00 | $175.00 |
Surcharge after expiration - Late payment is unintentional | $1,640.00 | $820.00 | $410.00 |
Full Text

Legal Events
Date | Code | Event | Description |
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Nov 15, 2022 | CC | CERTIFICATE OF CORRECTION | |
Apr 19, 2022 | P | Publication | |
Mar 30, 2022 | STCF | INFORMATION ON STATUS: PATENT GRANT | free format text: PATENTED CASE |
Mar 22, 2022 | STPP | INFORMATION ON STATUS: PATENT APPLICATION AND GRANTING PROCEDURE IN GENERAL | free format text: PUBLICATIONS -- ISSUE FEE PAYMENT VERIFIED |
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Jun 04, 2021 | STPP | INFORMATION ON STATUS: PATENT APPLICATION AND GRANTING PROCEDURE IN GENERAL | free format text: NON FINAL ACTION MAILED |
Nov 05, 2020 | P | Published | |
Sep 25, 2020 | STPP | INFORMATION ON STATUS: PATENT APPLICATION AND GRANTING PROCEDURE IN GENERAL | free format text: DOCKETED NEW CASE - READY FOR EXAMINATION |
Jul 21, 2020 | F | Filing | |
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