G01N 30/20
Using a sampling valve
Official title: using a sampling valve
G01N30/20 (Using a sampling valve) appears on 734 US grants and 773 published applications in this corpus.
Search patents in G01N- Granted patents
- 734
- Published applications
- 773
- Assignees
- 339
- Inventors
- 1,342
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 2 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 10 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 13 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 11 | 0 |
| 2001 | 8 | 5 |
| 2002 | 13 | 23 |
| 2003 | 10 | 11 |
| 2004 | 8 | 17 |
| 2005 | 11 | 12 |
| 2006 | 11 | 19 |
| 2007 | 12 | 16 |
| 2008 | 10 | 9 |
| 2009 | 8 | 18 |
| 2010 | 10 | 27 |
| 2011 | 7 | 22 |
| 2012 | 22 | 22 |
| 2013 | 15 | 21 |
| 2014 | 21 | 32 |
| 2015 | 21 | 32 |
| 2016 | 26 | 31 |
| 2017 | 31 | 33 |
| 2018 | 24 | 44 |
| 2019 | 38 | 47 |
| 2020 | 38 | 48 |
| 2021 | 39 | 58 |
| 2022 | 44 | 50 |
| 2023 | 46 | 54 |
| 2024 | 50 | 50 |
| 2025 | 37 | 37 |
| 2026 | 38 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Analysis device and analysis method for quality index of natural gas product and application6 Oct 2026US 12,754,171 B2PetroChina Company Limited
- Multiport gas chromatograph valve29 Sep 2026US 12,748,082 B2Rosemount Inc.
- Multiport gas chromatograph piston valve18 Aug 2026US 12,710,403 B2Rosemount Inc.
- Systems and methods for injection monitoring and diagnostics for gas chromatography18 Aug 2026US 12,710,408 B2Thermo Finnigan LLC
- Loading a fluidic element11 Aug 2026US 12,704,121 B2Dionex Softron GmbH
- A multi-stage apparatus for automated sample preparation and online peptide mapping analysis1 Oct 2026US 2026/0298782 A1Hoffmann-La Roche Inc.
- Flow-restricted pneumatic modulator for a multidimensional gas chromatography system27 Aug 2026US 2026/0251624 A1The Regents of the University of Michigan
- Connection Device for a Separation System such as a Chromatography System20 Aug 2026US 2026/0241308 A1Cytiva Sweden AB
- Multi-column chromatography systems with rotatable valve assemblies20 Aug 2026US 2026/0241309 A1Life Technologies Corporation
- Gdv optimized injection with sample pre-compression20 Aug 2026US 2026/0243736 A1Dionex Softron GmbH
Most cited
By later US patents
- Devices and methods for using centripetal acceleration to drive fluid movement in a microfluidics system370US 6,319,469 B1Silicon Valley Bank · 2001
- Thermally-actuated microminiature valve238US 5,058,856 AHewlett-Packard Company · 1991
- Shape memory alloy film actuated microvalve234US 5,325,880 ATiNi Alloy Company · 1994
- Micromachined valve with polyimide film diaphragm158US 4,869,282 ARosemount Inc. · 1989
- Capillary microvalve146US 6,143,248 AGamera Bioscience Corporation · 2000