F28D 2021/0059
For petrochemical plants
Official title: {for petrochemical plants}
F28D2021/0059 (For petrochemical plants) appears on 117 US grants and 151 published applications in this corpus.
Search patents in F28D- Granted patents
- 117
- Published applications
- 151
- Assignees
- 83
- Inventors
- 258
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 3 |
| 2002 | 2 | 5 |
| 2003 | 3 | 2 |
| 2004 | 2 | 2 |
| 2005 | 2 | 1 |
| 2006 | 0 | 2 |
| 2007 | 1 | 6 |
| 2008 | 0 | 3 |
| 2009 | 0 | 4 |
| 2010 | 3 | 8 |
| 2011 | 3 | 3 |
| 2012 | 5 | 8 |
| 2013 | 6 | 4 |
| 2014 | 3 | 6 |
| 2015 | 6 | 9 |
| 2016 | 7 | 11 |
| 2017 | 11 | 12 |
| 2018 | 5 | 14 |
| 2019 | 10 | 12 |
| 2020 | 10 | 5 |
| 2021 | 5 | 9 |
| 2022 | 6 | 7 |
| 2023 | 6 | 6 |
| 2024 | 7 | 6 |
| 2025 | 4 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method, system and apparatus for hydrocarbon flow system fluid cooling4 Aug 2026US 12,698,942 B2Empig AS
- Heat exchanger with a vertical rod baffle structure and at least one notched longitudinal partition plate2 Jun 2026US 12,644,650 B2Lummus Novolen Technology GmbH
- Heat exchanger closure assemblies and methods of using and installing the same28 Oct 2025US 12,455,123 B2Lummus Technology Inc.
- Thermal cracking tube with fluid agitating element29 Jul 2025US 12,372,312 B2Kubota Corporation
- Polymerization using a spiral heat exchanger20 May 2025US 12,304,981 B2ExxonMobil Engineering & Technology Company
- Heat Exchanger Maintenance Planning Using Predictive Analytics6 Aug 2026US 2026/0227776 A1Chevron U.S.A.Inc.
- Heat Exchange Assembly for Hydrogenation of Diesel and Wax Oil, and Hydrogenation System9 Jul 2026US 2026/0193549 A1Zhenhai Petrochemical Jianan Engineering Co., Ltd.
- Processes and apparatuses for heating a process fluid27 Feb 2025US 2025/0067516 A1Uop LLC
- Method and apparatus for heat recovery from cracked gas31 Oct 2024US 2024/0360368 A1Lummus Technology Inc.
- Transfer line exchanger with thermal spray coating17 Oct 2024US 2024/0344785 A1Basell Polyolefine GmbH
Most cited
By later US patents
- Hydraulic fracturing system and method179US 9,840,897 B22017
- Method of preheating hydrocarbons for thermal cracking85US 4,361,478 ALinde Aktiengesellschaft · 1982
- Mitigation of in-tube fouling in heat exchangers using controlled mechanical vibration48US 7,836,941 B2ExxonMobil Research and Engineering Company · 2010
- Detecting and correcting fouling in heat exchangers31US 10,328,408 B2Uop LLC · 2019
- Method of cleaning a heater29US 6,170,493 B22001