Class D21C : PRODUCTION OF CELLULOSE BY REMOVING NON-CELLULOSE SUBSTANCES FROM CELLULOSE- CONTAINING MATERIALS; REGENERATION OF PULPING LIQUORS; APPARATUS THEREFOR
Subclass 3/04: Pulping cellulose-containing materials (digesters D21C 7/00) with acids, acid salts, or acid anhydrides
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 12252844 | Approach to biomass delignification | Aug 18, 21 | Mar 18, 25 | SixRing Inc. |
| 12234604 | Modified sulfuric acid and uses thereof | Mar 18, 24 | Feb 25, 25 | SixRing Inc. |
| 12221747 | Method for separating biomass components by ternary system | Nov 01, 22 | Feb 11, 25 | QILU UNIVERSITY OF TECHNOLOGY |
| 12188181 | Sulfite-based processes for producing nanocellulose, and compositions and products produced therefrom | Oct 18, 21 | Jan 07, 25 | GranBio Intellectual Property Holdings, LLC |
| 12123138 | Arylsulfonic acid—modified sulfuric acid and uses thereof | Aug 20, 21 | Oct 22, 24 | SixRing Inc. |
| 12084811 | Lignocellulosic biomass based process for production of lignins and syngas, and electricity production efficient syngas | Feb 14, 19 | Sep 10, 24 | Société Bioeb |
| 12077915 | Nanocellulose-reinforced corrugated medium | Jun 10, 22 | Sep 03, 24 | GranBio Intellectual Property Holdings, LLC |
| 12077654 | Hydrophobic nanocellulose-coated paper and paperboard | Sep 10, 19 | Sep 03, 24 | GranBio Intellectual Property Holdings, LLC |
| 12071724 | Approach to biomass delignification | Aug 18, 21 | Aug 27, 24 | SixRing Inc. |
| 12065780 | Modified sulfuric acid and uses thereof | Aug 20, 21 | Aug 20, 24 | SixRing Inc. |
| 12031269 | Modified sulfuric acid and uses thereof | Aug 20, 21 | Jul 09, 24 | SixRing Inc. |
| 12024821 | Modified sulfuric acid and uses thereof | Aug 20, 21 | Jul 02, 24 | SixRing Inc. |
| 11982051 | Temperature-controlled delignification of biomass | Jun 16, 22 | May 14, 24 | SixRing Inc. |
| 11982052 | Combination approach to delignification of biomass under ambient conditions | Aug 17, 21 | May 14, 24 | SixRing Inc. |
| 11965289 | Modified sulfuric acid and uses thereof | Aug 20, 21 | Apr 23, 24 | SixRing Inc. |
| 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 |
| 11905656 | Approach to biomass delignification | Aug 18, 21 | Feb 20, 24 | SixRing Inc. |
| 11905171 | Modified sulfuric acid and uses thereof | Aug 20, 21 | Feb 20, 24 | SixRing Inc. |
| 11866753 | Methods of processing lignocellulosic biomass using single-stage autohydrolysis and enzymatic hydrolysis with C5 bypass and post-hydrolysis | May 25, 21 | Jan 09, 24 | Inbicon A/S |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2025/0059,709 | NANOCELLULOSE-REINFORCED CORRUGATED MEDIUM | Aug 30, 24 | Feb 20, 25 | Not available |
| 2025/0059,357 | HYDROPHOBIC NANOCELLULOSE-COATED PAPER AND PAPERBOARD | 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 |
| 2024/0368,834 | APPROACH TO BIOMASS DELIGNIFICATION | Jul 15, 24 | Nov 07, 24 | Not available |
| 2024/0318,381 | MODIFIED SULFURIC ACID AND USES THEREOF | Jun 06, 24 | Sep 26, 24 | Not available |
| 2024/0309,585 | MODIFIED SULFURIC ACID AND USES THEREOF | May 22, 24 | Sep 19, 24 | Not available |
| 2024/0263,394 | MODIFIED SULFURIC ACID AND USES THEREOF | Apr 17, 24 | Aug 08, 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 |
| 2024/0247,438 | APPROACH TO BIOMASS DELIGNIFICATION | Feb 12, 24 | Jul 25, 24 | Not available |
| 2024/0150,173 | MODIFIED SULFURIC ACID AND USES THEREOF | Jan 15, 24 | May 09, 24 | Not available |
| 2024/0141,587 | PROCESSES, METHODS, AND SYSTEMS FOR CHEMO-MECHANICAL CELLULAR EXPLOSION AND SOLID AND LIQUID PRODUCTS MADE BY THE SAME | Jan 10, 24 | May 02, 24 | Not available |
| 2024/0102,064 | METHODS OF PROCESSING LIGNOCELLULOSIC BIOMASS USING SINGLE-STAGE AUTOHYDROLYSIS AND ENZYMATIC HYDROLYSIS WITH C5 BYPASS AND POST-HYDROLYSIS | Nov 29, 23 | Mar 28, 24 | Inbicon A/S |
| 2024/0052,566 | Optimization Of Chemical Consumption in Biomass Delignification | Aug 10, 23 | Feb 15, 24 | Not available |
| 2023/0416,985 | MODIFIED SULFURIC ACID AND USES THEREOF | Sep 11, 23 | Dec 28, 23 | Not available |
| 2022/0018,066 | Biomass Processing | Jul 19, 21 | Jan 20, 22 | Not available |
| 2019/0211,502 | PROCESS FOR MANUFACTURING RECYCLED PULP FROM USED SANITARY GOODS | Mar 14, 19 | Jul 11, 19 | Not available |
| 2019/0185,638 | OLEOPHILIC AND HYDROPHOBIC NANOCELLULOSE MATERIALS | Jul 13, 18 | Jun 20, 19 | 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 |
| 2018/0245,285 | METHODS OF PRODUCING A PAPER PRODUCT | Mar 21, 18 | Aug 30, 18 | The Research Foundation for the State University of New York |
| 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 |
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