F25J 3/04587
For the nh3 synthesis
Official title: {for the NH3 synthesis, e.g. for adjusting the H2/N2 ratio}
F25J3/04587 (For the nh3 synthesis) appears on 31 US grants and 33 published applications in this corpus.
Search patents in F25J- Granted patents
- 31
- Published applications
- 33
- Assignees
- 31
- Inventors
- 82
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 0 | 3 |
| 2003 | 2 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 2 |
| 2018 | 1 | 0 |
| 2019 | 1 | 0 |
| 2020 | 0 | 5 |
| 2021 | 1 | 3 |
| 2022 | 1 | 0 |
| 2023 | 3 | 3 |
| 2024 | 1 | 3 |
| 2025 | 1 | 5 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Integrated ammonia and sulfuric acid production plant and process20 Jan 2026US 12,528,752 B2Chemetics Inc.
- Method and plant for the production of ammonia with renewable energy22 Jul 2025US 12,365,595 B2Stamicarbon B. V.
- High energy recovery nitric acid process using liquid oxygen containing fluid20 Feb 2024US 11,905,172 B2Yara International Asa
- Nitrogen process for production of ammonia and liquid hydrogen5 Dec 2023US 11,834,333 B2L'Air Liquide, Societe Anonyme pour l'Etude et l'Exploitation Procedes Georges Claude
- Integration of hydrogen liquefaction with gas processing units14 Nov 2023US 11,815,309 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- System and method for producing ammonia30 Oct 2025US 2025/0333316 A1Siemens Energy Global GmbH & Co. KG
- System and method for controlling cooling of an electrolyzer unit24 Jul 2025US 2025/0236968 A1ACWA POWER Company
- System for ammonia production including hydrogen leak recovery from dry gas seals of hydrogen compressor, and method6 Feb 2025US 2025/0042753 A1Nuovo Pignone Tecnologie Srl
- Effective use of cryogenic separation section in syngas manufacture23 Jan 2025US 2025/0026639 A1Topsoe A/S
- Method and plant for the production of ammonia with renewable energy2 Jan 2025US 2025/0002360 A1Stamicarbon B. V.
Most cited
By later US patents
- Methanol plant retrofit for acetic acid manufacture208US 6,232,352 B1Acetex limited · 2001
- Integrated process for converting hydrocarbon gas to liquids124US 6,248,794 B1Atlantic Richfield Company · 2001
- Processes for the production of hydrocarbons, power and carbon dioxide from carbon-containing materials93US 6,306,917 B1Rentech, Inc. · 2001
- Integrated process for making methanol and ammonia40US 5,180,570 A1993
- Ammonia production with enriched air reforming and nitrogen injection into the synthesis loop39US 5,736,116 AThe M. W. Kellogg Company · 1998