D21C 3/045
In presence of o2 or o3
Official title: {in presence of O2 or O3}
D21C3/045 (In presence of o2 or o3) appears on 7 US grants and 7 published applications in this corpus.
Search patents in D21C- Granted patents
- 7
- Published applications
- 7
- Assignees
- 5
- Inventors
- 15
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year.
Recent patents
- Modified sulfuric acid and uses thereof26 Aug 2025US 12,398,037 B2Sixring Inc.
- Modified sulfuric acid and uses thereof20 Feb 2024US 11,905,171 B2Sixring Inc.
- Process and a dissolving pulp manufactured by the process17 Jul 2018US 10,023,995 B2SöDra Cell Aktiebolag AB
- Wet oxidation of biomass4 Oct 2016US 9,458,569 B2Clean-Vantage LLC
- Process of treating a lignocellulosic material2 Jul 2013US 8,475,627 B2International Paper Company
- Modified sulfuric acid and uses thereof9 May 2024US 2024/0150173 A1Sixring Inc.
- Modified sulfuric acid and uses thereof25 Aug 2022US 2022/0267150 A1Sixring Inc.
- Process and a dissolving pulp manufactured by the process21 May 2015US 2015/0136346 A1SöDra Cell Aktiebolag AB
- Wet oxidation of biomass17 Jul 2014US 2014/0199740 A1Clean-Vantage LLC
- Process of treating a lignocellulosic material8 Sep 2011US 2011/0214826 A1International Paper Company
Most cited
By later US patents
- Process of treating a lignocellulosic material with hemicellulose pre-extraction and hemicellulose adsorption7US 7,824,521 B2International Paper Company · 2010
- Process of treating a lignocellulosic material5US 8,475,627 B2International Paper Company · 2013
- Process and a dissolving pulp manufactured by the process1US 10,023,995 B2SöDra Cell Aktiebolag AB · 2018
- Process of treating a lignocellulosic material with an alkali metal borate pre-extraction step1US 7,943,009 B2International Paper Company · 2011