C01C 1/0452
Heat exchangers
Official title: {Heat exchangers}
C01C1/0452 (Heat exchangers) appears on 36 US grants and 42 published applications in this corpus.
Search patents in C01C- Granted patents
- 36
- Published applications
- 42
- Assignees
- 36
- Inventors
- 91
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 2 |
| 2017 | 2 | 2 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 2 | 3 |
| 2021 | 4 | 6 |
| 2022 | 0 | 0 |
| 2023 | 3 | 3 |
| 2024 | 3 | 4 |
| 2025 | 2 | 13 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and process to provide cooling water for ammonia and or hydrogen productions25 Aug 2026US 12,714,978 B2Air Products and Chemicals, Inc.
- Ammonia synthesis converter and method for small production units14 Apr 2026US 12,600,641 B2
- High-temperature shock heating for thermochemical reactions24 Feb 2026US 12,558,662 B2University of Maryland, College Park
- Use of sulfur as alternative carbon-free fuel in ammonia primary reformer combustion zone, by coupling ammonia and sulfuric acid production facilities21 Oct 2025US 12,447,454 B1Saudi Arabian Mining Company (Ma'aden)
- Ammonia plant having a start-up furnace and method for producing ammonia8 Apr 2025US 12,269,751 B2thyssenkrupp AG
- Systems and methods for the production of ammonia8 Oct 2026US 2026/0308000 A1The Mosaic Company
- Ammonia Synthesis Converter and Method for Small Production Units8 Oct 2026US 2026/0308001 A1AmmPower America LLC
- Reactor Systems for Gas Synthesis3 Sep 2026US 2026/0257185 A117, Inc.
- Ammonia reactor and methods14 May 2026US 2026/0132021 A1United Kingdom Research and Innovation
- System and method for producing ammonia30 Oct 2025US 2025/0333316 A1Siemens Energy Global GmbH & Co. KG
Most cited
By later US patents
- Fluid processing device and method30US 6,994,829 B2Battelle Memorial Institute · 2006
- Heat exchanger for the cooling of gases, particularly from the synthesis of ammonia25US 4,561,496 ABorsig GmbH · 1985
- Waste heat boiler and steam superheater system13US 4,352,341 AThe M. W. Kellogg Company · 1982
- Heat exchanger incorporating nitriding-resistant material9US 4,401,153 AUhde GmbH · 1983
- Combined heat exchanger system such as for ammonia synthesis reactor effluent9US 4,907,643 AC F Braun & Co. · 1990