C09B 1/38
Urea and thiourea derivatives
C09B1/38 (Urea and thiourea derivatives) appears on 4 US grants and 2 published applications in this corpus.
Search patents in C09B- Granted patents
- 4
- Published applications
- 2
- Assignees
- 3
- Inventors
- 10
- Latest grant
- 7 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 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 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Fluorescent dye oil tracer compositions7 Jan 2025US 12,188,350 B2Saudi Arabian Oil Company
- N,N-Substituted 2,4,5-triketoimidazolidines and a process for their preparation4 Jul 1978US 4,099,007 AHoechst Aktiengesellschaft
- N,N'substituted 2,4,5-triketoimidazolidines, corresponding resinous polymers and a process for their preparation20 Jun 1978US 4,096,130 AHoechst Aktiengesellschaft
- Water-soluble dyestuffs readily convertible into insoluble form and process for preparing them3 Aug 1976US 3,972,904 AHoechst Aktiengesellschaft
Most cited
By later US patents
- N,N'substituted 2,4,5-triketoimidazolidines, corresponding resinous polymers and a process for their preparation8US 4,096,130 AHoechst Aktiengesellschaft · 1978
- N,N-Substituted 2,4,5-triketoimidazolidines and a process for their preparation3US 4,099,007 AHoechst Aktiengesellschaft · 1978
- Water-soluble dyestuffs readily convertible into insoluble form and process for preparing them2US 3,972,904 AHoechst Aktiengesellschaft · 1976