G01N 30/40
Using back flushing
Official title: using back flushing
G01N30/40 (Using back flushing) appears on 134 US grants and 64 published applications in this corpus.
Search patents in G01N- Granted patents
- 134
- Published applications
- 64
- Assignees
- 75
- Inventors
- 267
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 6 | 0 |
| 1992 | 13 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 2 |
| 2004 | 0 | 4 |
| 2005 | 1 | 4 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 2 | 2 |
| 2010 | 1 | 3 |
| 2011 | 4 | 2 |
| 2012 | 2 | 4 |
| 2013 | 4 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 3 |
| 2017 | 1 | 2 |
| 2018 | 2 | 3 |
| 2019 | 4 | 6 |
| 2020 | 2 | 3 |
| 2021 | 7 | 3 |
| 2022 | 4 | 7 |
| 2023 | 4 | 2 |
| 2024 | 6 | 1 |
| 2025 | 2 | 2 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fluidic network for aseptic sampling31 Mar 2026US 12,590,870 B2Waters Technologies Corporation
- Interface system and corresponding method17 Mar 2026US 12,578,315 B2Thermo Fisher Scientific (Bremen) GmbH
- Gas component detection device with poisoning suppression1 Jul 2025US 12,345,689 B2Murata Manufacturing Co., Ltd.
- Gas sample selector3 Jun 2025US 12,320,786 B2Agilent Technologies, Inc.
- LC system and method with column backflushing22 Oct 2024US 12,123,856 B2Roche Diagnostics Operations, Inc.
- Analysis system and method for impurity components in perfluoropropane23 Jul 2026US 2026/0210916 A1Lansis Instrument (Shanghai) Co., Ltd
- Gas chromatograph and method for introducing sample gas in gas chromatograph16 Jul 2026US 2026/0202383 A1Shimadzu Corporation
- Automatic tuning of a rig site gas chromatograph28 May 2026US 2026/0146981 A1Schlumberger Technology Corporation
- Gas Analysis System22 May 2025US 2025/0164453 A1Shimadzu Corporation
- Flow correction for back pressure regulated rff flow modulator3 Apr 2025US 2025/0110090 A1Leco Corporation
Most cited
By later US patents
- Reversible flow chromatographic binding assay181US 5,726,010 AIDEXX Laboratories, Inc. · 1998
- Reversible flow chromatographic binding assay system, kit, and method85US 5,726,013 AIDEXX Laboratories, Inc. · 1998
- Miniature devices useful for gas chromatography78US 4,935,040 AThe Perkin-Elmer Corporation · 1990
- Reversible flow chromatographic binding assay74US 5,750,333 AIDEXX Laboratories, Inc. · 1998
- High speed gas chromatography68US 5,808,178 AThermedics Detection Inc. · 1998