B01D 3/4233
Head- and feed stream
Official title: {Head- and feed stream}
B01D3/4233 (Head- and feed stream) appears on 7 US grants and 8 published applications in this corpus.
Search patents in B01D- Granted patents
- 7
- Published applications
- 8
- Assignees
- 7
- Inventors
- 25
- Latest grant
- 11 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 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 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 2 | 2 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Reflux arrangement for distillation columns11 Mar 2025US 12,247,007 B2Saudi Arabian Oil Company
- Systems for controlling fractionation using dynamic competing economic objectives26 Sep 2023US 11,766,625 B2
- Controlling fractionation using dynamic competing economic objectives25 Jul 2023US 11,707,698 B2Phillips 66 Company
- Method of column control18 Jan 2022US 11,225,444 B2Sabic Global Technologies B.V.
- Process and apparatus for controlling the split of liquid reflux in a divided wall column6 Oct 2020US 10,792,583 B2Uop LLC
- Methods for optimization of distillation column for reduction of energy consumption27 Aug 2026US 2026/0249208 A1Sabic Global Technologies B.V.
- Continuous vacuum distillation system and method17 Oct 2024US 2024/0342628 A1
- Reflux arrangement for distillation columns29 Feb 2024US 2024/0067590 A1Saudi Arabian Oil Company
- Systems for controlling fractionation using dynamic competing economic objectives22 Jun 2023US 2023/0191278 A1Phillips 66 Company
- Controlling fractionation using dynamic competing economic objectives22 Jun 2023US 2023/0193141 A1Phillips 66 Company
Most cited
By later US patents
- System and method for auto distilling liquids at strictly defined conditions regardless of composition4US 10,363,495 B2Instrumentation Scientifique de Laboratoire ISL · 2019
- Preheating of distillation feed4US 4,501,657 APhillips Petroleum Company · 1985
- Method of column control2US 11,225,444 B2Sabic Global Technologies B.V. · 2022
- Systems for controlling fractionation using dynamic competing economic objectives2US 11,766,625 B22023
- Process and apparatus for controlling the split of liquid reflux in a divided wall column1US 10,792,583 B2Uop LLC · 2020