C02F 2301/046
Recirculation with an external loop
C02F2301/046 (Recirculation with an external loop) appears on 796 US grants and 1,362 published applications in this corpus.
Search patents in C02F- Granted patents
- 796
- Published applications
- 1,362
- Assignees
- 803
- Inventors
- 2,887
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 6 | 7 |
| 2003 | 3 | 3 |
| 2004 | 4 | 16 |
| 2005 | 4 | 16 |
| 2006 | 9 | 9 |
| 2007 | 8 | 15 |
| 2008 | 9 | 9 |
| 2009 | 13 | 25 |
| 2010 | 11 | 22 |
| 2011 | 13 | 19 |
| 2012 | 13 | 23 |
| 2013 | 8 | 30 |
| 2014 | 14 | 32 |
| 2015 | 18 | 63 |
| 2016 | 27 | 44 |
| 2017 | 26 | 54 |
| 2018 | 38 | 84 |
| 2019 | 46 | 73 |
| 2020 | 68 | 96 |
| 2021 | 64 | 131 |
| 2022 | 74 | 142 |
| 2023 | 85 | 121 |
| 2024 | 72 | 118 |
| 2025 | 86 | 119 |
| 2026 | 60 | 90 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Method and apparatus for controlling microorganisms112US 5,424,032 ADiversey, Inc. · 1995
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- Oral cyclosporin formulations93US 5,766,629 ASangStat Medical Corporation · 1998
- Water treatment installation for a tangential filtration loop75US 5,271,830 AGie Anjou-Recherche · 1993
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