Description
Class C08B : POLYSACCHARIDES; DERIVATIVES THEREOF
Subclass 1/02: Preparatory treatment of cellulose for making derivatives thereof Rendering cellulose suitable for esterification
C08B 1/02
Sub-Class
Stats
- 19 US PATENTS IN FORCE
- 4 US APPLICATIONS PENDING
- 10 Total Patent Owners
- 110 TOTAL INVENTORS
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11840585 | Cellulose derivatives | May 04, 18 | Dec 12, 23 | Betulium Oy |
| 11161917 | Method for producing cellulose derivative, and cellulose derivative | Oct 15, 18 | Nov 02, 21 | NEC Corporation |
| 11015291 | Fine cellulose fiber and production method for same | Mar 16, 17 | May 25, 21 | FUTAMURA KAGAKU KABUSHIKI KAISHA; Asahi Kasei Kabushiki Kaisha; |
| 10982009 | Cellulose derivative and use thereof | Aug 29, 16 | Apr 20, 21 | NEC Corporation |
| 10927189 | Cellulose acetate and producing method therefor | Aug 21, 17 | Feb 23, 21 | Daicel Corporation Industries Ltd. |
| 10851496 | Process for manufacture of highly refined cellulose fiber materials and the new fibers | Nov 03, 17 | Dec 01, 20 | Not available |
| 10669404 | Functionalized cellulose nanocrystal materials and methods of preparation | Feb 27, 17 | Jun 02, 20 | Purdue Research Foundation |
| 10538597 | Acylation process | Oct 15, 14 | Jan 21, 20 | Rhodia Acetow GmbH |
| 9611586 | Method and a system for manufacturing cellulose material | Nov 23, 12 | Apr 04, 17 | UPM-KYMMENE CORPORATION |
| 9469693 | Process for the derivatization of cellulose | Oct 26, 11 | Oct 18, 16 | RE:NEWCELL AB |
| 9435077 | Method for processing lignocellulose containing material | Dec 10, 10 | Sep 06, 16 | NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TNO |
| 8901054 | Cellulose and cellulose ether solutions and use thereof | Dec 13, 13 | Dec 02, 14 | SE TYLOSE GMBH & CO. KG |
| 8871924 | Regioselectively substituted cellulose esters produced in a tetraalkylammonium alkylphosphate ionic liquid process and products produced therefrom | Jan 25, 12 | Oct 28, 14 | EASTMAN CHEMICAL COMPANY |
| 6600034 | Method of producing cellulose polymers | Feb 20, 01 | Jul 29, 03 | FUJIFILM CORPORATION |
| 5990304 | Cellulose acetate excellent in physical strength, and process for production thereof | Oct 09, 98 | Nov 23, 99 | Daicel Chemical Industries, Ltd., FUJI PHOTO FILM CO., LTD., |
| 5914397 | Cellulose acetate excellent in physical strength, and process for production thereof | Nov 21, 96 | Jun 22, 99 | FUJI PHOTO FILM CO., LTD. |
| 5484913 | Calcium-modified oxidized cellulose hemostat | Mar 24, 95 | Jan 16, 96 | JOHNSON & JOHNSON MEDICAL, INC. |
| 5378828 | Process for preparing soluble alkali metal salts of cellulose sulfate using chlorosulfuric acid and pyridine | Sep 02, 93 | Jan 03, 95 | NOVADEX INTERNATIONAL LIMITED |
| 5364935 | Continuous hydrolysis of cellulose acetate | Apr 23, 93 | Nov 15, 94 | EASTMAN CHEMICAL COMPANY |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0417,487 | JANUS-TYPE SPHERICAL CELLULOSE NANOPARTICLES | Nov 07, 22 | Dec 19, 24 | Not available |
| 2024/0392,508 | Oleophilic cellulosic and/or lignocellulosic fibres, a composition and a product comprising the same, a method of preparing the same, and uses of the same | Aug 31, 22 | Nov 28, 24 | Not available |
| 2018/0291,118 | METHOD FOR IMPROVING QUALITY AND REACTIVITY OF CELLULOSE | Sep 27, 16 | Oct 11, 18 | OBSHESTVO S OGRANICHENNOY OTVETSTVENNOSTYU "TWIN TECHNOLOGY COMPANY" |
| 2018/0127,515 | Molar mass controlled cellulose | May 30, 16 | May 10, 18 | Not available |
Top Owners in This Subclass
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Patents Issued To Date - By Filing Year
Average Time to Issuance
- 35 Months (last 2 years Issuances)
- 35 Months (last 5 years Issuances)