Class D21C : PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
Subclass 3/20: Pulping cellulose-containing materials (digesters D21C 7/00) with organic solvents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12221747 | Method for separating biomass components by ternary system | Nov 01, 22 | Feb 11, 25 | QILU UNIVERSITY OF TECHNOLOGY |
| 12116729 | Common preparation of lignocellulosic feedstock and a product containing cellulose but free from lignin | May 29, 20 | Oct 15, 24 | Chemiefaser Lenzing Aktiengesellschaft |
| 12084811 | Lignocellulosic biomass based process for production of lignins and syngas, and electricity production efficient syngas | Feb 14, 19 | Sep 10, 24 | Société Bioeb |
| 12077910 | Nanocellulose production co-located at a pulp and paper mill | May 17, 21 | Sep 03, 24 | GranBio Intellectual Property Holdings, LLC |
| 12077915 | Nanocellulose-reinforced corrugated medium | Jun 10, 22 | Sep 03, 24 | GranBio Intellectual Property Holdings, LLC |
| 12060679 | Lignocellulosic composites prepared with aqueous alkaline and urea solutions in cold temperatures systems | Mar 25, 21 | Aug 13, 24 | Bradley University |
| 12012429 | Renewable aromatics from lignocellulosic lignin | Mar 02, 21 | Jun 18, 24 | National Technology & Engineering Solutions of Sandia, LLC |
| 11993624 | Methods for preparing thermally stable lignin fractions | Oct 29, 20 | May 28, 24 | Virdia, LLC |
| 11982052 | Combination approach to delignification of biomass under ambient conditions | Aug 17, 21 | May 14, 24 | SixRing Inc. |
| 11970816 | Dual surfactant digester additive composition and a method for enhancing the pulping of wood chips using the same | Aug 11, 21 | Apr 30, 24 | Chemstone Inc. |
| 11939721 | Method for non-catalytic delignification of biomass inside an apparatus | Jan 13, 20 | Mar 26, 24 | LIGNOPURA AGROTECH PVT LTD. |
| 11932706 | Processes and apparatus for producing nanocellulose, and compositions and products produced therefrom | Feb 01, 21 | Mar 19, 24 | GranBio Intellectual Property Holdings, LLC |
| 11905341 | Solvent-based processes for producing nanocellulose, and compositions and products produced therefrom | Jan 07, 22 | Feb 20, 24 | GranBio Intellectual Property Holdings, LLC |
| 11851815 | Efficient methods and compositions for recovery of products from organic acid pretreatment of plant materials | Oct 26, 21 | Dec 26, 23 | Pierson Capital Environmental (Beijing) Limited |
| 11834783 | Integrated kraft pulp mill and thermochemical conversion system | Mar 31, 22 | Dec 05, 23 | Canfor Pulp Ltd.; Licella Pty Ltd.; |
| 11814790 | Dec 15, 18 | Nov 14, 23 | EXEGI IP MANAGEMENT B.V. | |
| 11624152 | Low energy production process for producing paper pulp from lignocellulosic biomass | Dec 13, 18 | Apr 11, 23 | Société Bioeb |
| 11619007 | Vegetable paper comprising fibres of a plant | Jun 10, 21 | Apr 04, 23 | Mativ Holdings, Inc. |
| 11492753 | Process for the treatment of lignocellulosic biomass | Feb 17, 14 | Nov 08, 22 | NEDERLANDSE ORGANISATIE VOOR TOEGEPAST- NATUURWETENSCHAPPELIJK ONDERZOEK TNO |
| 11359334 | Nanocellulose-reinforced corrugated medium | Oct 03, 19 | Jun 14, 22 | GranBio Intellectual Property Holdings, LLC |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0075,427 | CATALYST FREE ORGANOSOLV PROCESS, SYSTEM, AND METHOD FOR FRACTIONATION OF LIGNOCELLULOSIC MATERIALS AND BIOPRODUCTS RECOVERY | Nov 20, 24 | Mar 06, 25 | Not available |
| 2025/0059,707 | NANOCELLULOSE PRODUCTION CO-LOCATED AT A PULP AND PAPER MILL | Aug 30, 24 | Feb 20, 25 | Not available |
| 2025/0059,709 | NANOCELLULOSE-REINFORCED CORRUGATED MEDIUM | Aug 30, 24 | Feb 20, 25 | Not available |
| 2025/0043,507 | USE OF A MODIFIED ACID IN DUAL PURPOSE BIOMASS DELIGNIFICATION | Aug 02, 24 | Feb 06, 25 | Not available |
| 2024/0401,270 | PROCESS FOR TREATMENT OF BIOMASS FOR PULPING AND BIOREFINERY APPLICATIONS | Sep 26, 22 | Dec 05, 24 | Not available |
| 2024/0328,084 | DELIGNIFICATION OF MATERIALS IN DEEP EUTECTIC SOLVENTS | Mar 30, 24 | Oct 03, 24 | Texas Tech University System; BastCore, Inc.; |
| 2024/0279,406 | NEW METHOD | Jun 07, 22 | Aug 22, 24 | Not available |
| 2024/0247,081 | PROCESSES AND APPARATUS FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM | Feb 09, 24 | Jul 25, 24 | Not available |
| 2024/0175,206 | METHOD FOR PRODUCING PRODUCTS BASED ON NON-WOODY BIOMASS AS RAW MATERIAL | Dec 29, 21 | May 30, 24 | Not available |
| 2024/0102,241 | INTEGRATED KRAFT PULP MILL AND THERMOCHEMICAL CONVERSION SYSTEM | Nov 02, 23 | Mar 28, 24 | Canfor Pulp Ltd.; Licella Pty Ltd.; |
| 2022/0136,171 | A METHOD FOR NON-CATALYTIC DELIGNIFICATION OF BIOMASS INSIDE AN APPARATUS | Jan 13, 20 | May 05, 22 | Not available |
| 2021/0363,696 | USE OF IN-SITU IONIC LIQUID (IL) AND DEEP EUTECTIC SOLVENT (DES) SYNTHESIS USING CHEMICALLY SYNTHESIZED OR BIOMASS-DERIVED IONS IN THE PRETREATMENT OF BIOMASS | Jun 04, 21 | Nov 25, 21 | Not available |
| 2021/0332,530 | USE OF ENSILED BIOMASS FOR INCREASED EFFICIENCY OF THE PRETREATMENT OF BIOMASS | Apr 27, 21 | Oct 28, 21 | Not available |
| 2021/0172,118 | Repulping Method For The Removal Of Lignocellulosic Hornification | Dec 06, 19 | Jun 10, 21 | Sanata Technologies Inc. |
| 2021/0079,593 | Dissolution of Cellulose in Ionic Liquids | Jan 17, 19 | Mar 18, 21 | Not available |
| 2019/0100,604 | PROCESSES AND APPARATUS FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM | Oct 04, 18 | Apr 04, 19 | Not available |
| 2018/0251,941 | NANOCELLULOSE PRODUCTION CO-LOCATED AT A PULP AND PAPER MILL | Aug 29, 16 | Sep 06, 18 | Not available |
| 2018/0094,383 | METHODS FOR THE PRODUCTION OF HIGH SOLIDS NANOCELLULOSE | Apr 22, 16 | Apr 05, 18 | Not available |
| 2018/0016,355 | SOLVENT-BASED PROCESSES FOR PRODUCING NANOCELLULOSE, AND COMPOSITIONS AND PRODUCTS PRODUCED THEREFROM | Jul 10, 17 | Jan 18, 18 | API INTELLECTUAL PROPERTY HOLDINGS, LLC |
| 2016/0237,173 | NANOCELLULOSE PRODUCTION USING LIGNOSULFONIC ACID | Apr 25, 16 | Aug 18, 16 | API INTELLECTUAL PROPERTY HOLDINGS, LLC |
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