Description
Class C08B : POLYSACCHARIDES; DERIVATIVES THEREOF
Subclass 3/18: Preparation of cellulose esters of organic acids Preparation of mixed organic cellulose esters Aceto-butyrates
C08B 3/18
Sub-Class
Stats
- 9 US PATENTS IN FORCE
- 2 US APPLICATIONS PENDING
- 3 Total Patent Owners
- 134 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11447576 | Cellulose ester compositions derived from recycled plastic content syngas | Feb 03, 20 | Sep 20, 22 | Eastman Chemical Company |
| 10459290 | Optical film, polarizing plate, and image display device | Jul 17, 15 | Oct 29, 19 | FUJIFILM Corporation |
| 10323101 | Method for producing polysaccharide derivative and lignin derivative | Oct 23, 15 | Jun 18, 19 | National University Corporation Kanazawa University; KANAZAWA INSTITUTE OF TECHNOLOGY; |
| 9725584 | Resin composition and resin molded article | Aug 19, 15 | Aug 08, 17 | FUJI XEROX CO., LTD. |
| 9156918 | Treatment of cellulose esters | Apr 18, 12 | Oct 13, 15 | EASTMAN CHEMICAL COMPANY |
| 9074021 | Cellulose derivative, thermo-molding material, molded body and method for preparation thereof, and case for electric and electronic devices | Aug 11, 10 | Jul 07, 15 | FUJIFILM CORPORATION |
| 8354525 | Regioselectively substituted cellulose esters produced in a halogenated ionic liquid process and products produced therefrom | Aug 12, 09 | Jan 15, 13 | EASTMAN CHEMICAL COMPANY |
| 7504139 | Optical cellulose acylate film, polarizing plate and liquid crystal display | Dec 23, 04 | Mar 17, 09 | FUJIFILM CORPORATION |
| 7501167 | Cellulose acylate film, polarizing plate, and liquid crystal display device | Sep 20, 06 | Mar 10, 09 | FUJIFILM CORPORATION |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0051,482 | Biodegradable Microbeads from Mixed Cellulose Esters | Nov 11, 22 | Feb 13, 25 | Eastman Chemical Company |
| 2022/0403,053 | CELLULOSE ESTERS COMPRISING RECYCLE CONTENT BUTYRYL | Nov 06, 20 | Dec 22, 22 | Eastman Chemical Company |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 39 Months (last 2 years Issuances)
- 39 Months (last 5 years Issuances)