F25J 3/04866
Construction and layout of air fractionation equipments
Official title: {Construction and layout of air fractionation equipments, e.g. valves, machines (F25J5/00 takes precedence)}
F25J3/04866 (Construction and layout of air fractionation equipments) appears on 584 US grants and 488 published applications in this corpus.
Search patents in F25J- Granted patents
- 584
- Published applications
- 488
- Assignees
- 132
- Inventors
- 765
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 10 | 0 |
| 1990 | 3 | 0 |
| 1991 | 11 | 0 |
| 1992 | 11 | 0 |
| 1993 | 9 | 0 |
| 1994 | 14 | 0 |
| 1995 | 18 | 0 |
| 1996 | 14 | 0 |
| 1997 | 29 | 0 |
| 1998 | 20 | 0 |
| 1999 | 26 | 0 |
| 2000 | 22 | 0 |
| 2001 | 41 | 7 |
| 2002 | 23 | 17 |
| 2003 | 24 | 15 |
| 2004 | 15 | 25 |
| 2005 | 11 | 8 |
| 2006 | 10 | 22 |
| 2007 | 11 | 18 |
| 2008 | 8 | 17 |
| 2009 | 9 | 10 |
| 2010 | 3 | 20 |
| 2011 | 7 | 15 |
| 2012 | 2 | 15 |
| 2013 | 8 | 20 |
| 2014 | 6 | 25 |
| 2015 | 10 | 20 |
| 2016 | 14 | 23 |
| 2017 | 20 | 22 |
| 2018 | 19 | 22 |
| 2019 | 21 | 41 |
| 2020 | 23 | 26 |
| 2021 | 17 | 18 |
| 2022 | 23 | 24 |
| 2023 | 10 | 16 |
| 2024 | 14 | 23 |
| 2025 | 17 | 11 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F25J 3/04872Vertical layout of cold equipments within in the cold box226
- F25J 3/04896Details of columns184
- F25J 3/04951Arrangements of multiple air fractionation units or multiple equipments fulfilling the same102
- F25J 3/0489Modularity and arrangement of parts of the air fractionation unit, in particular81
- F25J 3/04969Retrofitting or revamping of an existing air fractionation unit64
- F25J 3/04975Adapted for special use of the air fractionation unit62
- F25J 3/04945Details of internal structure53
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