B01D 2311/2661
Addition of gas
B01D2311/2661 (Addition of gas) appears on 70 US grants and 94 published applications in this corpus.
Search patents in B01D- Granted patents
- 70
- Published applications
- 94
- Assignees
- 82
- Inventors
- 237
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 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 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 0 | 3 |
| 2015 | 0 | 7 |
| 2016 | 4 | 7 |
| 2017 | 1 | 6 |
| 2018 | 7 | 12 |
| 2019 | 8 | 4 |
| 2020 | 5 | 11 |
| 2021 | 3 | 11 |
| 2022 | 9 | 6 |
| 2023 | 7 | 9 |
| 2024 | 13 | 5 |
| 2025 | 3 | 7 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electrohydromodulating process for recovering nutrients, mineralizing organics, and inactivating pathogens in wastewater19 May 2026US 12,630,452 B2University of Miami
- Mobile water treatment plant for the removal of PFAS chemicals28 Apr 2026US 12,612,324 B2World Wide Clean Water, LLC
- Water treatment method and water treatment apparatus10 Mar 2026US 12,570,560 B2Yokogawa Electric Corporation
- Controlling biofouling in water purification30 Dec 2025US 12,509,382 B2Saudi Arabian Oil Company
- Membrane distiller and operation method therefore30 Sep 2025US 12,427,482 B2Nanosized Sweden AB
- Carbon dioxide capture and biogas upgrading system using microbubble generator-linked electrodeionization device2 Jul 2026US 2026/0183716 A1Weni Co.,Ltd
- Electrochemical metallurgical slag recycling14 May 2026US 2026/0132484 A1Electrasteel, Inc.
- Membrane contactor with bubbler25 Sep 2025US 2025/0296037 A1Honeywell International Inc.
- Apparatus and method for separating organic acid alkali salts into organic acids and alkali salts by using diffusion dialysis31 Jul 2025US 2025/0242309 A1Korea Research Institute of Chemical Technology
- Chemical free extraction of lithium from brine17 Jul 2025US 2025/0230074 A1The George Washington University
Most cited
By later US patents
- Process for sour water treatment30US 4,253,928 AShell Oil Company · 1981
- Process for electro-dialysis14US 4,160,713 AHitachi, Ltd. · 1979
- Membrane filtration process with high water recovery14US 9,266,762 B2General Electric Company · 2016
- Reverse osmosis system11US 10,717,047 B12020
- Structurally altered gas molecule produced from water and method of generation thereof8US 11,384,440 B1Hydraves Technologies Inc. · 2022