B01D 2251/608
Sulfates
B01D2251/608 (Sulfates) appears on 82 US grants and 102 published applications in this corpus.
Search patents in B01D- Granted patents
- 82
- Published applications
- 102
- Assignees
- 94
- Inventors
- 280
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 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 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 3 | 4 |
| 2011 | 0 | 5 |
| 2012 | 3 | 6 |
| 2013 | 3 | 4 |
| 2014 | 1 | 5 |
| 2015 | 5 | 4 |
| 2016 | 2 | 5 |
| 2017 | 3 | 9 |
| 2018 | 6 | 4 |
| 2019 | 9 | 7 |
| 2020 | 6 | 16 |
| 2021 | 8 | 5 |
| 2022 | 6 | 3 |
| 2023 | 4 | 8 |
| 2024 | 2 | 3 |
| 2025 | 3 | 6 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for simultaneously removing high-load sulfur dioxide and nitrogen oxide in waste gas10 Mar 2026US 12,569,807 B2Nanjing University
- Surgical smoke treatment system for polar and nonpolar gases17 Feb 2026US 12,553,628 B2Aerobiotix USA LLC
- Method for zero discharge treatment of desulfurization wastewater suitable for multiple working conditions9 Sep 2025US 12,409,414 B2Xi'an Boiler & Environmental Protection Engineering Co., Ltd.
- Methods for recovering iodine (I2)5 Aug 2025US 12,378,113 B2Honeywell International Inc.
- Acid gas scrubbing methods featuring amine phase separation for hydrogen sulfide capture10 Jun 2025US 12,325,004 B2ExxonMobil Technology and Engineering Company
- Production of nitrogen, potassium, sulfur nutrient through de-carbonization and utilization of calcium sulfate3 Sep 2026US 2026/0257974 A1Sabic Agri-Nutrients Company
- Surgical smoke treatment system for polar and nonpolar gases14 May 2026US 2026/0132944 A1
- System and method for process chemistry abatement and recycling22 Jan 2026US 2026/0021440 A1Tokyo Electron Limited
- Method and Integrated System for Capturing Carbon4 Dec 2025US 2025/0367597 A1Verdus Technologies PTE. LTD.
- Methods for preparation of ca nutrient to support carbon neutrality4 Dec 2025US 2025/0367598 A1Sabic Agri-Nutrients Company
Most cited
By later US patents
- Elimination of odors from waste material74US 4,405,354 AUniscope, Inc. · 1983
- Adsorption methods71US 6,916,360 B2Donaldson Company, Inc. · 2005
- Adsorption apparatus48US 6,533,847 B2Donaldson Company, Inc. · 2003
- Canister with porous plastic ends42US 5,503,662 AMultiform Desiccants, Inc. · 1996
- Systems and methods for exhaust gas cleaning and/or ballast water treatment41US 9,216,376 B2Keppel Offshore & Marine Technology Centre Pte Ltd · 2015