C05F 7/02
From sulfite liquor or other waste lyes from the manufacture of cellulose
Official title: from sulfite liquor or other waste lyes from the manufacture of cellulose
C05F7/02 (From sulfite liquor or other waste lyes from the manufacture of cellulose) appears on 7 US grants and 10 published applications in this corpus.
Search patents in C05F- Granted patents
- 7
- Published applications
- 10
- Assignees
- 11
- Inventors
- 34
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for preparing biomechanical unbleached pulp from wheat straw and full utilization of by-products thereof28 Oct 2025US 12,454,792 B2Qilu University of Technology
- Method for preparing unbleached biomechanical pulp by hot steam in coordination with biological enzyme treatment of wheat straw and full utilization of by-products thereof30 Sep 2025US 12,428,784 B2Qilu University of Technology
- Lignin materials containing compositions4 Dec 2018US 10,144,677 B2Lxp Group GmbH
- Circular utilization method in pulping and papermaking processes with straw15 Jul 2014US 8,778,135 B2Shandong Tralin Paper Co., Ltd.
- Process for recovering organic acids from bleaching liquors2 Aug 2005US 6,923,888 B2Chempolis Oy
- Method for preparing unbleached biomechanical pulp by hot steam in coordination with biological enzyme treatment of wheat straw and full utilization of by-products thereof30 Jun 2022US 2022/0205176 A1Qilu University of Technology
- Method for preparing biomechanical unbleached pulp from wheat straw and full utilization of by-products thereof30 Jun 2022US 2022/0205177 A1Qilu University of Technology
- System and Method for Heat Treatment of Sludge12 Jul 2018US 2018/0194657 A1C-Green Technology AB
- Method for producing fertilizer from a biopolymer, and fertilizer21 Sep 2017US 2017/0267597 A1S2P AG Straw - Pulp & Paper
- Novel lignin materials containing compositions30 Jun 2016US 2016/0185675 A1Maxbiogas GmbH
Most cited
By later US patents
- Circular utilization method in pulping and papermaking processes with straw6US 8,778,135 B2Shandong Tralin Paper Co., Ltd. · 2014
- Method for producing organic fertilizers5US 4,180,392 AChisso Corporation · 1979
- Solar chemical process for sludge treatment5US 4,191,549 A1980
- Process for recovering organic acids from bleaching liquors2US 6,923,888 B2Chempolis Oy · 2005