B01D 2259/40009
Using sensors or gas analysers
Official title: using sensors or gas analysers
B01D2259/40009 (Using sensors or gas analysers) appears on 325 US grants and 311 published applications in this corpus.
Search patents in B01D- Granted patents
- 325
- Published applications
- 311
- Assignees
- 209
- Inventors
- 801
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 0 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 8 | 0 |
| 1999 | 10 | 0 |
| 2000 | 9 | 0 |
| 2001 | 6 | 4 |
| 2002 | 9 | 11 |
| 2003 | 13 | 4 |
| 2004 | 15 | 12 |
| 2005 | 8 | 17 |
| 2006 | 8 | 15 |
| 2007 | 6 | 6 |
| 2008 | 13 | 9 |
| 2009 | 4 | 11 |
| 2010 | 10 | 9 |
| 2011 | 11 | 9 |
| 2012 | 7 | 8 |
| 2013 | 6 | 5 |
| 2014 | 3 | 7 |
| 2015 | 7 | 12 |
| 2016 | 8 | 28 |
| 2017 | 13 | 6 |
| 2018 | 15 | 11 |
| 2019 | 12 | 17 |
| 2020 | 15 | 11 |
| 2021 | 13 | 12 |
| 2022 | 12 | 17 |
| 2023 | 2 | 23 |
| 2024 | 10 | 10 |
| 2025 | 7 | 26 |
| 2026 | 9 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Atmospheric steam desorption for direct air capture18 Aug 2026US 12,708,870 B2Climeworks AG
- Carbon dioxide recovery system23 Jun 2026US 12,661,612 B2Denso Corporation
- Method and system for operating an adsorption-based system for removing water from a process stream19 May 2026US 12,629,629 B2Shell USA, Inc.
- Temperature-based monitor and control of a compressed-gas dryer12 May 2026US 12,623,178 B2Atlas Copco Airpower, Naamloze Vennootschap
- System and method for concentrating gas7 Apr 2026US 12,594,524 B2Ventec Life Systems, Inc.
- Atmospheric steam desorption for direct air capture1 Oct 2026US 2026/0295505 A1Climeworks AG
- Carbon dioxide recovery apparatus24 Sep 2026US 2026/0284573 A1Honda Motor Co., Ltd.
- Respiratory therapy systems and methods23 Jul 2026US 2026/0207873 A1Ventec Life Systems, Inc.
- Solvent recovery apparatus23 Jul 2026US 2026/0208095 A1Taikisha Ltd.
- Direct air capture sorbent system28 May 2026US 2026/0145120 A1Robert Bosch GmbH
Most cited
By later US patents
- Portable oxygen concentration system and method of using the same310US 6,651,658 B1SeQual Technologies, Inc. · 2003
- Portable oxygen concentration system and method of using the same223US 6,691,702 B2SeQual Technologies, Inc. · 2004
- Portable oxygen concentration system and method of using the same182US 6,629,525 B2SeQual Technologies, Inc. · 2003
- Gas concentration sensor and control for oxygen concentrator utilizing gas concentration sensor139US 5,917,135 AInvacare Corporation · 1999
- Methods and apparatuses for gas separation by pressure swing adsorption with partial gas product feed to fuel cell power source139US 6,866,950 B2QuestAir Technologies Inc. · 2005