G01N 30/6021
Adjustable pistons
Official title: {Adjustable pistons}
G01N30/6021 (Adjustable pistons) appears on 100 US grants and 93 published applications in this corpus.
Search patents in G01N- Granted patents
- 100
- Published applications
- 93
- Assignees
- 45
- Inventors
- 145
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 4 |
| 2004 | 2 | 3 |
| 2005 | 2 | 1 |
| 2006 | 3 | 11 |
| 2007 | 4 | 7 |
| 2008 | 4 | 4 |
| 2009 | 3 | 8 |
| 2010 | 7 | 10 |
| 2011 | 1 | 3 |
| 2012 | 4 | 3 |
| 2013 | 1 | 8 |
| 2014 | 7 | 2 |
| 2015 | 1 | 4 |
| 2016 | 5 | 5 |
| 2017 | 3 | 4 |
| 2018 | 1 | 3 |
| 2019 | 7 | 4 |
| 2020 | 2 | 0 |
| 2021 | 3 | 1 |
| 2022 | 2 | 3 |
| 2023 | 2 | 1 |
| 2024 | 2 | 2 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dynamic axial compression for preparative columns using external compression1 Jul 2025US 12,345,688 B2Bio-Rad Laboratories, Inc.
- Method for sanitization of a chromatography column22 Apr 2025US 12,280,168 B2Cytiva Sweden AB
- Method and apparatus for packing a chromatography column assembly23 Jul 2024US 12,044,663 B2Cytiva BioProcess R&D AB
- Chromatography columns, systems and methods12 Mar 2024US 11,927,573 B2Cytiva BioProcess R&D AB
- Dynamic axial compression for preparative columns using external compression12 Dec 2023US 11,841,350 B2Bio-Rad Laboratories, Inc.
- Liquid chromatography piston17 Sep 2026US 2026/0276606 A1Changzhou Ruixi Biotechnology Co., Ltd.
- Method and Apparatus for Packing a Chromatography Column Assembly5 Dec 2024US 2024/0402142 A1Cytiva BioProcess R&D AB
- Dynamic axial compression for preparative columns using external compression2 May 2024US 2024/0142414 A1Bio-Rad Laboratories, Inc.
- Chromatography column8 Jun 2023US 2023/0173408 A1Cytiva Sweden AB
- Dynamic axial compression for preparative columns using external compression22 Sep 2022US 2022/0299486 A1Bio-Rad Laboratories, Inc.
Most cited
By later US patents
- Chromatography apparatus77US 4,891,133 ACerex Corporation · 1990
- Column slurry packing compressor54US 5,169,522 AHT Chemicals, Inc. · 1992
- Column clamping device for chromatography53US 4,451,365 AMerck Patent GmbH · 1984
- Chromatography system41US 5,167,809 AAmicon Corporation · 1992
- Chromatographic column36US 4,888,112 ALabomatic AG · 1989