B01D 3/4283
Bottom stream
Official title: {Bottom stream}
B01D3/4283 (Bottom stream) appears on 34 US grants and 24 published applications in this corpus.
Search patents in B01D- Granted patents
- 34
- Published applications
- 24
- Assignees
- 24
- Inventors
- 62
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 2 |
| 2015 | 4 | 1 |
| 2016 | 4 | 3 |
| 2017 | 0 | 2 |
| 2018 | 1 | 3 |
| 2019 | 3 | 2 |
| 2020 | 2 | 1 |
| 2021 | 1 | 2 |
| 2022 | 0 | 3 |
| 2023 | 2 | 0 |
| 2024 | 0 | 1 |
| 2025 | 2 | 1 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Distillation column minimum flow arrangement14 Jul 2026US 12,678,708 B2Saudi Arabian Oil Company
- Systems and methods for purging an isolation valve with a liquid purge medium23 Jun 2026US 12,663,087 B2TapcoEnpro, LLC
- Systems and methods for purging an isolation valve with a liquid purge medium21 Jan 2025US 12,203,038 B2Delta Valve, LLC
- Method to mitigate fouling in a hydrocarbon plant14 Jan 2025US 12,195,684 B2Bl Technologies, Inc.
- Systems and methods for purging an isolation valve with a liquid purge medium26 Dec 2023US 11,852,258 B2TapcoEnpro, LLC
- Systems and methods for purging an isolation valve with a liquid purge medium16 Jan 2025US 2025/0020221 A1TapcoEnpro, LLC
- Distillation column minimum flow arrangement24 Oct 2024US 2024/0350940 A1Saudi Arabian Oil Company
- Systems and methods for purging an isolation valve with a liquid purge medium30 Jun 2022US 2022/0204864 A1DeltaValve, LLC
- Systems and Methods for Purging an Isolation Valve with a Liquid Purge Medium30 Jun 2022US 2022/0204865 A1TapcoEnpro, LLC
- Method to mitigate fouling in a hydrocarbon plant16 Jun 2022US 2022/0186129 A1Bl Technologies, Inc.
Most cited
By later US patents
- Fractionation method with quench liquid recycle13US 4,776,948 AWilliams, Phillips & Umphlett · 1988
- Method of controlling heat exchangers using enthalpy flow as the correcting variable13US 5,363,905 ABayer Aktiengesellschaft · 1994
- Method for purifying HF catalyst in an isoparaffin-olefin alkylation11US 4,014,953 APhillips Petroleum Company · 1977
- Method for controlling the reboiler section of a dual reboiler distillation column10US 4,019,964 AUniversal Oil Products Company · 1977
- Apparatus for purifying HF catalyst in an alkylation process9US 3,975,164 APhillips Petroleum Company · 1976