B01D 2321/18
Use of gases
B01D2321/18 (Use of gases) appears on 474 US grants and 640 published applications in this corpus.
Search patents in B01D- Granted patents
- 474
- Published applications
- 640
- Assignees
- 278
- Inventors
- 1,121
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 7 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 7 | 0 |
| 1998 | 5 | 0 |
| 1999 | 9 | 0 |
| 2000 | 13 | 0 |
| 2001 | 20 | 5 |
| 2002 | 7 | 18 |
| 2003 | 12 | 21 |
| 2004 | 10 | 36 |
| 2005 | 20 | 32 |
| 2006 | 23 | 34 |
| 2007 | 13 | 39 |
| 2008 | 11 | 30 |
| 2009 | 13 | 33 |
| 2010 | 16 | 32 |
| 2011 | 20 | 30 |
| 2012 | 11 | 23 |
| 2013 | 16 | 29 |
| 2014 | 20 | 21 |
| 2015 | 13 | 26 |
| 2016 | 12 | 25 |
| 2017 | 11 | 28 |
| 2018 | 18 | 26 |
| 2019 | 24 | 22 |
| 2020 | 18 | 27 |
| 2021 | 15 | 19 |
| 2022 | 15 | 24 |
| 2023 | 16 | 22 |
| 2024 | 19 | 17 |
| 2025 | 17 | 10 |
| 2026 | 7 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for operating separation membrane module, computer-readable recording medium having program recorded thereon, and water production system18 Aug 2026US 12,708,878 B2Toray Industries, Inc.
- Wastewater treatment method21 Jul 2026US 12,685,968 B2Kubota Corporation
- Transmembrane pressure difference inference device and diffused air amount control device17 Mar 2026US 12,577,131 B2Kubota Corporation
- Process for water treatment using immersed gas transfer membranes17 Mar 2026US 12,577,137 B2Bl Technologies, Inc.
- Method and program for determining cleaning trouble in fresh water generator10 Mar 2026US 12,569,813 B2Toray Industries, Inc.
- Bioreactor with membrane filtration and methods for treating wastewater10 Sep 2026US 2026/0265098 A1Bl Technologies, Inc.
- Container and water treatment system20 Aug 2026US 2026/0241342 A1Yokogawa Electric Corporation
- Method and device for regenerating inorganic porous gas separation membrane13 Aug 2026US 2026/0233167 A1Jgc Corporation
- Membrane scouring airflow control system, membrane scouring airflow control method, and membrane scouring airflow control program23 Jul 2026US 2026/0208115 A1Kubota Corporation
- Aeration system for defouling one or more liquid-filtration membranes16 Jul 2026US 2026/0199840 A1
Most cited
By later US patents
- Vertical skein of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate200US 5,639,373 AZenon Environmental Inc. · 1997
- Frameless array of hollow fiber membranes and method of maintaining clean fiber surfaces while filtering a substrate to withdraw a permeate193US 5,248,424 AZenon Environmental Inc. · 1993
- Vertical cylindrical skein of hollow fiber membranes and method of maintaining clean fiber surfaces191US 5,783,083 AZenon Environmental Inc. · 1998
- Automatic flushing system for membrane separation machines such as reverse osmosis machines177US 3,992,301 ARaypak, Inc. · 1976
- Hollow fiber filter device156US 4,876,006 AEbara Corporation · 1989