B01D 2313/221
Heat exchangers
B01D2313/221 (Heat exchangers) appears on 341 US grants and 327 published applications in this corpus.
Search patents in B01D- Granted patents
- 341
- Published applications
- 327
- Assignees
- 227
- Inventors
- 822
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 2 | 0 |
| 1992 | 10 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 9 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 2 |
| 2002 | 5 | 3 |
| 2003 | 9 | 11 |
| 2004 | 6 | 9 |
| 2005 | 2 | 6 |
| 2006 | 4 | 11 |
| 2007 | 8 | 7 |
| 2008 | 7 | 7 |
| 2009 | 6 | 8 |
| 2010 | 4 | 14 |
| 2011 | 4 | 9 |
| 2012 | 11 | 18 |
| 2013 | 8 | 18 |
| 2014 | 11 | 7 |
| 2015 | 9 | 13 |
| 2016 | 10 | 21 |
| 2017 | 9 | 15 |
| 2018 | 16 | 15 |
| 2019 | 19 | 15 |
| 2020 | 9 | 11 |
| 2021 | 5 | 16 |
| 2022 | 20 | 15 |
| 2023 | 11 | 22 |
| 2024 | 14 | 20 |
| 2025 | 19 | 21 |
| 2026 | 12 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hybrid system and method of waste heat utilization-based photovoltaic power generation and seawater desalination6 Oct 2026US 12,752,240 B2Xi' An Jiaotong University
- Resonant thermal oscillator to improve output of a thermo-fluidic system22 Sep 2026US 12,741,232 B2William Marsh Rice University
- Deaerator and electrolyte measurement system18 Aug 2026US 12,710,395 B2Hitachi High-Tech Corporation
- Systems and methods for harnessing thermal gradient energy18 Aug 2026US 12,712,192 B2
- Filter holder for extrusion of liposomes28 Jul 2026US 12,691,421 B2Evonik Operations GmbH
- Salt-rejecting continuous passive solar thermal desalination via thin-film condensation8 Oct 2026US 2026/0307012 A1The Regents of the University of California
- Bioreactor systems1 Oct 2026US 2026/0295554 A1ABEC, Inc.
- Oxygenator30 Jul 2026US 2026/0216413 A1Terumo Kabushiki Kaisha
- Negative pressure reverse osmosis filtering device and filtering system having the same23 Jul 2026US 2026/0208110 A1Everinn International Co., Ltd.
- Dewaterer systems and methods16 Jul 2026US 2026/0199839 A1
Most cited
By later US patents
- Portable oxygen concentration system and method of using the same310US 6,651,658 B1SeQual Technologies, Inc. · 2003
- Portable oxygen concentration system and method of using the same182US 6,629,525 B2SeQual Technologies, Inc. · 2003
- Hydrogen-selective metal membrane modules and method of forming the same135US 6,319,306 B1IdaTech, LLC · 2001
- Hydrogen purification devices, components and fuel processing systems containing the same107US 6,494,937 B1IdaTech, LLC · 2002
- Blood oxygenator using a hollow-fiber membrane97US 4,639,353 AMitsubishi Rayon Co., Ltd. · 1987