B09B 3/70
Chemical treatment
Official title: Chemical treatment, e.g. pH adjustment or oxidation (involving an extraction step B09B3/80)
B09B3/70 (Chemical treatment) appears on 744 US grants and 890 published applications in this corpus.
Search patents in B09B- Granted patents
- 744
- Published applications
- 890
- Assignees
- 690
- Inventors
- 2,232
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 8 | 0 |
| 1990 | 3 | 0 |
| 1991 | 8 | 0 |
| 1992 | 15 | 0 |
| 1993 | 24 | 0 |
| 1994 | 20 | 0 |
| 1995 | 16 | 0 |
| 1996 | 19 | 0 |
| 1997 | 24 | 0 |
| 1998 | 35 | 0 |
| 1999 | 15 | 0 |
| 2000 | 13 | 0 |
| 2001 | 16 | 4 |
| 2002 | 15 | 17 |
| 2003 | 13 | 10 |
| 2004 | 10 | 18 |
| 2005 | 9 | 14 |
| 2006 | 12 | 18 |
| 2007 | 8 | 18 |
| 2008 | 6 | 27 |
| 2009 | 8 | 17 |
| 2010 | 16 | 21 |
| 2011 | 16 | 22 |
| 2012 | 12 | 23 |
| 2013 | 18 | 25 |
| 2014 | 9 | 32 |
| 2015 | 22 | 35 |
| 2016 | 22 | 26 |
| 2017 | 22 | 39 |
| 2018 | 24 | 44 |
| 2019 | 24 | 40 |
| 2020 | 30 | 51 |
| 2021 | 23 | 38 |
| 2022 | 30 | 56 |
| 2023 | 34 | 78 |
| 2024 | 41 | 81 |
| 2025 | 39 | 80 |
| 2026 | 34 | 56 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for recovering lithium and method for processing lithium ion secondary battery22 Sep 2026US 12,744,261 B2Dowa Eco-System Co., Ltd.
- Battery disposal apparatus and battery disposal method using same25 Aug 2026US 12,715,028 B2SK On Co., Ltd.
- Method and installation for gasification of heterogenic mixtures of organic substances and compounds25 Aug 2026US 12,716,039 B2
- Reinforcing-fiber recovery reactor and method of producing recycled reinforcing fibers18 Aug 2026US 12,709,042 B2Miraikasei Inc.
- Solvent free copper extraction18 Aug 2026US 12,709,784 B2GreenSource Fabrication LLC
- Oxidized cellulosic materials and method of manufacturing same8 Oct 2026US 2026/0308078 A1The Research Foundation for The State University of New York
- Bag breaking device and method for processing waste accommodating bag body3 Sep 2026US 2026/0257257 A1Kurita Water Industries Ltd.
- Apparatus for recycling of waste batteries3 Sep 2026US 2026/0257259 A1Rd Solution Co., Ltd
- Treatment method for used sanitary goods3 Sep 2026US 2026/0257260 A1Kurita Water Industries Ltd.
- A low carbon emission coupled treatment system and method for waste20 Aug 2026US 2026/0241425 A1Guangdong University of Technology
Most cited
By later US patents
- Medical waste handling system104US 5,242,434 A1993
- Processes and means for waste resources utilization94US 5,134,944 A1992
- Method and apparatus for enhancing methane production87US 5,695,641 A1997
- Image display apparatus, disassembly processing method therefor, and component recovery method81US 6,632,113 B1Canon Kabushiki Kaisha · 2003
- Medical waste collection and treatment station75US 5,465,841 AEcomed, Inc. · 1995