C07C 271/42
With the nitrogen atoms of the carbamate groups bound to hydrogen atoms
Official title: with the nitrogen atoms of the carbamate groups bound to hydrogen atoms or to acyclic carbon atoms
C07C271/42 (With the nitrogen atoms of the carbamate groups bound to hydrogen atoms) appears on 345 US grants and 335 published applications in this corpus.
Search patents in C07C- Granted patents
- 345
- Published applications
- 335
- Assignees
- 248
- Inventors
- 1,102
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 11 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 10 | 0 |
| 1999 | 13 | 0 |
| 2000 | 10 | 0 |
| 2001 | 10 | 1 |
| 2002 | 12 | 12 |
| 2003 | 11 | 13 |
| 2004 | 6 | 20 |
| 2005 | 6 | 14 |
| 2006 | 10 | 18 |
| 2007 | 8 | 17 |
| 2008 | 7 | 8 |
| 2009 | 12 | 20 |
| 2010 | 12 | 23 |
| 2011 | 11 | 17 |
| 2012 | 21 | 12 |
| 2013 | 13 | 18 |
| 2014 | 12 | 9 |
| 2015 | 8 | 15 |
| 2016 | 20 | 23 |
| 2017 | 13 | 19 |
| 2018 | 11 | 8 |
| 2019 | 14 | 13 |
| 2020 | 8 | 10 |
| 2021 | 4 | 11 |
| 2022 | 5 | 7 |
| 2023 | 7 | 7 |
| 2024 | 3 | 6 |
| 2025 | 4 | 8 |
| 2026 | 1 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C07C 271/44To hydrogen atoms or to carbon atoms of unsubstituted hydrocarbon radicals159
- C07C 271/54To carbon atoms of hydrocarbon radicals substituted by carboxyl groups98
- C07C 271/52To carbon atoms of hydrocarbon radicals substituted by nitrogen atoms not being55
- C07C 271/48To carbon atoms of hydrocarbon radicals substituted by singly-bound oxygen atoms49
- C07C 271/46To carbon atoms of hydrocarbon radicals substituted by halogen atoms or by24
- C07C 271/50To carbon atoms of hydrocarbon radicals substituted by doubly-bound oxygen atoms14
Recent patents
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Most cited
By later US patents
- UV curable crosslinking agents useful in copolymerization224US 5,449,729 ABausch & Lomb Incorporated · 1995
- UV curable crosslinking agents useful in copolymerization217US 5,310,779 ABausch & Lomb Incorporated · 1994
- UV curable crosslinking agents useful in copolymerization160US 5,512,205 ABausch & Lomb Incorporated · 1996
- Compounds and compositions for delivering active agents116US 5,773,647 AEmisphere Technologies, Inc. · 1998
- Prodrugs of cannabidiol, compositions comprising prodrugs of cannabidiol and methods of using the same88US 8,293,786 B2AllTranz Inc. · 2012