G01N 30/44
Using recycling of the fraction to be distributed
Official title: using recycling of the fraction to be distributed
G01N30/44 (Using recycling of the fraction to be distributed) appears on 56 US grants and 48 published applications in this corpus.
Search patents in G01N- Granted patents
- 56
- Published applications
- 48
- Assignees
- 48
- Inventors
- 157
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 5 |
| 2009 | 2 | 1 |
| 2010 | 3 | 3 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 2 | 2 |
| 2014 | 1 | 2 |
| 2015 | 1 | 0 |
| 2016 | 0 | 2 |
| 2017 | 0 | 3 |
| 2018 | 1 | 0 |
| 2019 | 2 | 4 |
| 2020 | 3 | 4 |
| 2021 | 2 | 4 |
| 2022 | 2 | 2 |
| 2023 | 4 | 4 |
| 2024 | 2 | 3 |
| 2025 | 1 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-column gas chromatography for analysis of a formation sample25 Nov 2025US 12,480,930 B2Halliburton Energy Services.Inc.
- Automated semi-preparative gradient recycling liquid chromatography3 Sep 2024US 12,078,621 B2Waters Technologies Corporation
- Valve setup for SMB chromatography23 Jan 2024US 11,879,561 B2Sartorius Stedim Chromatography Systems Ltd.
- Simulated moving-bed type chromatographic separation method and simulated moving-bed type chromatographic separation system12 Dec 2023US 11,839,835 B2Organo Corporation
- Chromatographic separation method and chromatographic separation device21 Nov 2023US 11,819,779 B2Mitsubishi Chemical Aqua Solutions Co., Ltd.
- Preparative liquid chromatograph23 Apr 2026US 2026/0110667 A1Shimadzu Corporation
- Simulated moving-bed type chromatographic separation method and simulated moving-bed type chromatographic separation system27 Mar 2025US 2025/0099872 A1Organo Corporation
- Chromatography method and device, in particular method and device for supercritical liquid chromatography4 Jul 2024US 2024/0219356 A1K. D. Pharma Bexbach GmbH
- Method for separating a mixture20 Jun 2024US 2024/0198254 A1K. D. Pharma Bexbach GmbH
- Multi-column gas chromatography for analysis of a formation sample30 May 2024US 2024/0175858 A1Halliburton Energy Services.Inc.
Most cited
By later US patents
- Discontinuous countercurrent chromatographic process and apparatus117US 5,630,943 AMerck Patent GmbH · 1997
- Micropump78US 6,720,710 B1Berkeley Microinstruments, Inc. · 2004
- Device and a method for the separation of fluid substances51US 5,595,650 ACiba-Geigy Corporation · 1997
- Fractionation process for mixtures by elution chromatography with liquid in supercritical state and installation for its operation50US 4,478,720 ASociete Nationale Elf Aquitaine · 1984
- Method and apparatus for collecting samples for analysis of chemical composition46US 5,039,614 A1991