G01N 30/38
Flow patterns
G01N30/38 (Flow patterns) appears on 1,363 US grants and 1,311 published applications in this corpus.
Search patents in G01N- Granted patents
- 1,363
- Published applications
- 1,311
- Assignees
- 634
- Inventors
- 2,662
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 7 | 0 |
| 1980 | 12 | 0 |
| 1981 | 9 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 12 | 0 |
| 1985 | 9 | 0 |
| 1986 | 10 | 0 |
| 1987 | 8 | 0 |
| 1988 | 11 | 0 |
| 1989 | 16 | 0 |
| 1990 | 15 | 0 |
| 1991 | 24 | 0 |
| 1992 | 31 | 0 |
| 1993 | 25 | 0 |
| 1994 | 22 | 0 |
| 1995 | 21 | 0 |
| 1996 | 19 | 0 |
| 1997 | 14 | 0 |
| 1998 | 20 | 0 |
| 1999 | 23 | 0 |
| 2000 | 27 | 0 |
| 2001 | 35 | 13 |
| 2002 | 43 | 55 |
| 2003 | 43 | 56 |
| 2004 | 39 | 61 |
| 2005 | 29 | 55 |
| 2006 | 18 | 43 |
| 2007 | 28 | 46 |
| 2008 | 22 | 49 |
| 2009 | 33 | 43 |
| 2010 | 30 | 48 |
| 2011 | 24 | 42 |
| 2012 | 46 | 37 |
| 2013 | 26 | 41 |
| 2014 | 31 | 48 |
| 2015 | 29 | 40 |
| 2016 | 22 | 46 |
| 2017 | 39 | 60 |
| 2018 | 27 | 60 |
| 2019 | 58 | 75 |
| 2020 | 56 | 58 |
| 2021 | 49 | 72 |
| 2022 | 49 | 76 |
| 2023 | 58 | 70 |
| 2024 | 67 | 40 |
| 2025 | 57 | 39 |
| 2026 | 34 | 38 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- G01N 30/46Using more than one column907
- G01N 30/40Using back flushing134
- G01N 2030/382Flow switching in a single columnIndexing code109
- G01N 30/42Using counter-current89
- G01N 30/44Using recycling of the fraction to be distributed56
- G01N 2030/386Radial chromatography, i.e. with mobile phase traversing radially the stationary phaseIndexing code39
- G01N 2030/381Centrifugal chromatographyIndexing code38
- G01N 2030/387Turbulent flow of mobile phaseIndexing code16
All 9 subgroupsShow fewer
Recent patents
- Monitoring analysis device and monitoring analysis method6 Oct 2026US 12,754,173 B2Shimadzu Corporation
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- Propane-position carbon isotope testing method and testing system8 Oct 2026US 2026/0309682 A1China Petroleum & Chemical Corporation
- Analysis system, control method thereof, and recording medium24 Sep 2026US 2026/0287563 A1Shimadzu Corporation
- Liquid chromatograph system and control method24 Sep 2026US 2026/0287564 A1Shimadzu Corporation
- Liquid chromatography piston17 Sep 2026US 2026/0276606 A1Changzhou Ruixi Biotechnology Co., Ltd.
- Flow-restricted pneumatic modulator for a multidimensional gas chromatography system27 Aug 2026US 2026/0251624 A1The Regents of the University of Michigan
Most cited
By later US patents
- Microscale fluid handling system662US 5,872,010 ANortheastern University · 1999
- Affinity matrices of modified polysaccharide supports427US 5,059,654 ACuno Incorporated · 1991
- Apparatus and method for performing microfluidic manipulations for chemical analysis and synthesis396US 5,858,195 ALockheed Martin Energy Research Corporation · 1999
- Apparatus and method for performing microfluidic manipulations for chemical analysis and synthesis382US 6,033,546 ALockheed Martin Energy Research Corporation · 2000
- Apparatus and method for performing microfluidic manipulations for chemical analysis369US 6,001,229 ALockheed Martin Energy Systems, Inc. · 1999