B01J 2219/00159
Controlling multiple zones along the direction of flow
Official title: controlling multiple zones along the direction of flow, e.g. pre-heating and after-cooling
B01J2219/00159 (Controlling multiple zones along the direction of flow) appears on 741 US grants and 602 published applications in this corpus.
Search patents in B01J- Granted patents
- 741
- Published applications
- 602
- Assignees
- 412
- Inventors
- 1,621
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 7 | 0 |
| 1978 | 8 | 0 |
| 1979 | 10 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 10 | 0 |
| 1983 | 7 | 0 |
| 1984 | 8 | 0 |
| 1985 | 10 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 9 | 0 |
| 1989 | 11 | 0 |
| 1990 | 12 | 0 |
| 1991 | 13 | 0 |
| 1992 | 11 | 0 |
| 1993 | 15 | 0 |
| 1994 | 17 | 0 |
| 1995 | 13 | 0 |
| 1996 | 16 | 0 |
| 1997 | 8 | 0 |
| 1998 | 14 | 0 |
| 1999 | 18 | 0 |
| 2000 | 13 | 0 |
| 2001 | 23 | 18 |
| 2002 | 22 | 32 |
| 2003 | 21 | 32 |
| 2004 | 17 | 22 |
| 2005 | 17 | 32 |
| 2006 | 26 | 16 |
| 2007 | 19 | 27 |
| 2008 | 8 | 20 |
| 2009 | 24 | 21 |
| 2010 | 17 | 23 |
| 2011 | 15 | 22 |
| 2012 | 16 | 24 |
| 2013 | 17 | 16 |
| 2014 | 17 | 40 |
| 2015 | 18 | 19 |
| 2016 | 18 | 29 |
| 2017 | 28 | 22 |
| 2018 | 18 | 18 |
| 2019 | 20 | 18 |
| 2020 | 19 | 23 |
| 2021 | 19 | 26 |
| 2022 | 16 | 29 |
| 2023 | 24 | 25 |
| 2024 | 19 | 21 |
| 2025 | 11 | 17 |
| 2026 | 10 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Process for recovery of hydrocarbons and rejection of sand350US 5,316,664 ACanadian Occidental Petroleum Ltd. · 1994
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- Preparation of low-viscosity improved stable crude oil transport emulsions296US 4,983,319 ACanadian Occidental Petroleum Ltd. · 1991
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