C07C 273/12
Combined with the synthesis of melamine
Official title: combined with the synthesis of melamine
C07C273/12 (Combined with the synthesis of melamine) appears on 22 US grants and 29 published applications in this corpus.
Search patents in C07C- Granted patents
- 22
- Published applications
- 29
- Assignees
- 11
- Inventors
- 45
- Latest grant
- 24 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 2 | 2 |
| 2018 | 2 | 2 |
| 2019 | 2 | 2 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 2 | 6 |
| 2025 | 3 | 2 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Production of urea and melamine24 Jun 2025US 12,338,201 B2Stamicarbon B. V.
- Coupled urea melamine plant3 Jun 2025US 12,319,662 B2Stamicarbon B. V.
- Multiproduct low biuret urea production4 Mar 2025US 12,240,800 B2Stamicarbon B. V.
- Urea and melamine production12 Nov 2024US 12,139,448 B2Stamicarbon B. V.
- Coupled urea melamine production with HP CO2 stripping5 Nov 2024US 12,134,590 B2Stamicarbon B. V.
- A process and plant for the synthesis of urea and melamine30 Apr 2026US 2026/0116850 A1Casale SA
- Melamine process with purification of melamine offgas5 Mar 2026US 2026/0062392 A1Casale SA
- Urea melamine plant with melamine off-gas condenser1 Jan 2026US 2026/0001852 A1Stamicarbon B. V.
- Process for the synthesis of melamine19 Jun 2025US 2025/0197362 A1Casale SA
- Process for the production of melamine27 Mar 2025US 2025/0100978 A1Proman AG
Most cited
By later US patents
- Process for preparing urea42US 6,111,138 ADsm N. V. · 2000
- Process for the preparation of urea9US 6,114,579 ADsm N. V. · 2000
- Method of introducing melamine off-gases into a urea plant9US 6,586,629 B1Agrolinz Melamin GmbH · 2003
- Integrated process for urea and melamine production3US 7,414,130 B2Urea Casale S. A. · 2008
- Isolation of liquid urea from the off-gas of the synthesis of melamine2US 4,616,094 ABASF SE · 1986