B01D 3/42
Regulation
Official title: Regulation; Control
B01D3/42 (Regulation) appears on 742 US grants and 601 published applications in this corpus.
Search patents in B01D- Granted patents
- 742
- Published applications
- 601
- Assignees
- 379
- Inventors
- 1,557
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 19 | 0 |
| 1978 | 9 | 0 |
| 1979 | 5 | 0 |
| 1980 | 10 | 0 |
| 1981 | 16 | 0 |
| 1982 | 16 | 0 |
| 1983 | 14 | 0 |
| 1984 | 7 | 0 |
| 1985 | 19 | 0 |
| 1986 | 8 | 0 |
| 1987 | 3 | 0 |
| 1988 | 11 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 4 | 0 |
| 1993 | 11 | 0 |
| 1994 | 14 | 0 |
| 1995 | 10 | 0 |
| 1996 | 13 | 0 |
| 1997 | 9 | 0 |
| 1998 | 10 | 0 |
| 1999 | 14 | 0 |
| 2000 | 7 | 0 |
| 2001 | 9 | 2 |
| 2002 | 17 | 16 |
| 2003 | 14 | 13 |
| 2004 | 6 | 18 |
| 2005 | 13 | 20 |
| 2006 | 3 | 15 |
| 2007 | 9 | 10 |
| 2008 | 10 | 12 |
| 2009 | 7 | 12 |
| 2010 | 7 | 10 |
| 2011 | 8 | 14 |
| 2012 | 10 | 16 |
| 2013 | 14 | 20 |
| 2014 | 11 | 30 |
| 2015 | 21 | 23 |
| 2016 | 13 | 22 |
| 2017 | 24 | 40 |
| 2018 | 19 | 38 |
| 2019 | 53 | 38 |
| 2020 | 39 | 39 |
| 2021 | 38 | 39 |
| 2022 | 31 | 46 |
| 2023 | 27 | 44 |
| 2024 | 30 | 36 |
| 2025 | 35 | 17 |
| 2026 | 18 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- System and method for substantially horizonal rotating reflux distillation apparatus6 Oct 2026US 12,752,217 B2Development Technologies, LLC
- VE enrichment system22 Sep 2026US 12,741,233 B2Jj-Lurgi Engineering Equipment (Shanghai) Co. Ltd
- Recovering mono-ethylene glycol8 Sep 2026US 12,729,173 B2Changchun Meihe Science and Technology Development Co., Ltd.
- Distillation column minimum flow arrangement14 Jul 2026US 12,678,708 B2Saudi Arabian Oil Company
- Method for controlling a reactive distillation column7 Jul 2026US 12,673,909 B2BASF SE
- Distillation system fluid level control system24 Sep 2026US 2026/0284548 A1Honeywell International Inc.
- Methods for optimization of distillation column for reduction of energy consumption27 Aug 2026US 2026/0249208 A1Sabic Global Technologies B.V.
- Assembly and method for regenerating contaminated heat transfer fluids16 Jul 2026US 2026/0199805 A1Eastman Chemical Company
- Distillation device and distillation method11 Jun 2026US 2026/0158411 A1Taiyo Nippon Sanso Corporation
- Methods for purifying tin compound14 May 2026US 2026/0132156 A1Gelest, Inc.
Most cited
By later US patents
- Control system using an adaptive neural network for target and path optimization for a multivariable, nonlinear process157US 5,640,491 ANeuralware, Inc. · 1997
- Dynamic matrix control method145US 4,349,869 AShell Oil Company · 1982
- Adaptive-predictive control system128US 4,358,822 A1982
- Fractionation method and apparatus109US 4,230,533 APhillips Petroleum Company · 1980
- Separation of ethanol mixtures by extractive distillation105US 6,375,807 B12002