C01C 1/086
From urea
Official title: {from urea}
C01C1/086 (From urea) appears on 62 US grants and 63 published applications in this corpus.
Search patents in C01C- Granted patents
- 62
- Published applications
- 63
- Assignees
- 45
- Inventors
- 131
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 2 |
| 2002 | 2 | 1 |
| 2003 | 3 | 6 |
| 2004 | 2 | 3 |
| 2005 | 2 | 2 |
| 2006 | 2 | 0 |
| 2007 | 1 | 1 |
| 2008 | 1 | 5 |
| 2009 | 1 | 8 |
| 2010 | 0 | 2 |
| 2011 | 1 | 4 |
| 2012 | 5 | 4 |
| 2013 | 1 | 1 |
| 2014 | 2 | 4 |
| 2015 | 5 | 6 |
| 2016 | 3 | 4 |
| 2017 | 4 | 1 |
| 2018 | 1 | 4 |
| 2019 | 4 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 3 |
| 2022 | 2 | 0 |
| 2023 | 2 | 0 |
| 2024 | 0 | 0 |
| 2025 | 2 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for sequential energization of heating elements in an electric ammonia cracking unit24 Mar 2026US 12,582,957 B1First Ammonia Motors, Inc.
- Systems and methods for sequential energization of heating elements in an electric catalyst unit for ammonia dissociation9 Sep 2025US 12,409,434 B1First Ammonia Motors, Inc.
- Methods for reducing condensation7 Jan 2025US 12,188,074 B2Saudi Arabian Oil Company
- Integrated process for production of glycerol carbonate (4-hydroxymethyl-2-oxo-1, 3-dioxolane) and urea14 Feb 2023US 11,578,034 B2Sabic Global Technologies B.V.
- Reductant injecting device, exhaust gas processing device and exhaust gas processing method17 Jan 2023US 11,555,433 B2NGK Insulators, Ltd.
- Combined Catalyst Precursor/Surfactant Mixture For Reductant Urea Solution For Selective Catalytic Reduction23 Sep 2021US 2021/0293169 A1Southwest Research Institute
- Reductant injecting device, exhaust gas processing device and exhaust gas processing method22 Jul 2021US 2021/0222599 A1NGK Insulators, Ltd.
- Methods for reducing condensation1 Apr 2021US 2021/0095318 A1Saudi Arabian Oil Company
- Integrated process for production of glycerol carbonate (4-hydroxymethyl-2-oxo-1, 3-dioxolane) and urea23 Jan 2020US 2020/0024227 A1Sabic Global Technologies B.V.
- Use of a urea composition to produce diesel exhaust fluid (aus 32)26 Sep 2019US 2019/0292064 A1thyssenkrupp AG
Most cited
By later US patents
- Method and apparatus for producing ammonia (NH3)53US 6,928,807 B2MAN Nutzfahrzeuge AG · 2005
- Method for converting urea to ammonia49US 5,827,490 ANoell GmbH · 1998
- Process for the in-line hydrolysis of urea40US 5,240,688 AFuel Tech, Inc. · 1993
- Method for converting urea to ammonia38US 5,281,403 ANoell GmbH · 1994
- Methods for the production of ammonia from urea and/or biuret, and uses for NO.sub.x and/or particulate matter removal35US 6,077,491 AEC&C Technologies, Inc. · 2000