Description
Class C08B : POLYSACCHARIDES; DERIVATIVES THEREOF
Subclass 3/02: Preparation of cellulose esters of organic acids Catalysts used for the esterification
C08B 3/02
Sub-Class
Stats
- 9 US PATENTS IN FORCE
- 0 US APPLICATIONS PENDING
- 2 Total Patent Owners
- 28 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11021546 | NCC films and products based thereon | Sep 15, 16 | Jun 01, 21 | Melodea Ltd. |
| 11015291 | Fine cellulose fiber and production method for same | Mar 16, 17 | May 25, 21 | FUTAMURA KAGAKU KABUSHIKI KAISHA; Asahi Kasei Kabushiki Kaisha; |
| 10851179 | Polysaccharide derivatives and cross-metathesis processes for preparing them | Mar 16, 15 | Dec 01, 20 | Virginia Tech Intellectual Properties, Inc. |
| 10669404 | Functionalized cellulose nanocrystal materials and methods of preparation | Feb 27, 17 | Jun 02, 20 | Purdue Research Foundation |
| 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 |
| 8273872 | Cellulose esters and their production in halogenated ionic liquids | Aug 25, 11 | Sep 25, 12 | EASTMAN CHEMICAL COMPANY |
| 6627750 | Highly carboxylated cellulose fibers and process of making the same | Aug 03, 01 | Sep 30, 03 | RAYONIER PERFORMANCE FIBERS, LLC |
| 6160111 | Process for preparing cellulose esters using a sulfonic acid resin catalyst | Dec 02, 96 | Dec 12, 00 | EASTMAN CHEMICAL COMPANY |
| 5750677 | Direct process for the production of cellulose esters | Dec 30, 94 | May 12, 98 | EASTMAN CHEMICAL COMPANY |
Recent Publications
Not Available
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 43 Months (last 2 years Issuances)
- 43 Months (last 5 years Issuances)