C07D 257/12
Six-membered rings having four nitrogen atoms
C07D257/12 (Six-membered rings having four nitrogen atoms) appears on 6 US grants and 8 published applications in this corpus.
Search patents in C07D- Granted patents
- 6
- Published applications
- 8
- Assignees
- 6
- Inventors
- 33
- Latest grant
- 5 Apr 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 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 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 2 | 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 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Dissolution of hexamine in non-aqueous solvent5 Apr 2022US 11,292,971 B2Ecolab USA Inc.
- Dissolution of hexamine in non-aqueous solvent28 Apr 2020US 10,633,602 B2Ecolab USA Inc.
- Photoelectric conversion material, photoelectric conversion element, optical sensor, and imaging element12 Jun 2018US 9,997,721 B2FUJIFILM Corporation
- Pyrimidinones as melanin concentrating hormone receptor 123 Oct 2007US 7,285,557 B2SmithKline Beecham Corporation
- Lactam derivatives as antagonists for human 11cby receptors22 May 2007US 7,220,777 B2SmithKline Beecham Corporation
- Polyvalent ammonium salt compound, composition for forming silicon-containing resist underlayer film, and patterning process18 Sep 2025US 2025/0289931 A1Shin-Etsu Chemical Co., Ltd.
- Single-molecule peptide sequencing using xanthate amino acid reactive groups12 Jun 2025US 2025/0188538 A1Glyphic Biotechnologies, Inc.
- Dissolution of hexamine in non-aqueous solvent16 Jul 2020US 2020/0224104 A1Ecolab USA Inc.
- Dissolution of hexamine in non-aqueous solvent4 Oct 2018US 2018/0282637 A1Ecolab USA Inc.
- Photoelectric conversion material, photoelectric conversion element, optical sensor, and imaging element26 May 2016US 2016/0149144 A1FUJIFILM Corporation
Most cited
By later US patents
- Lactam derivatives as antagonists for human 11cby receptors9US 7,220,777 B2SmithKline Beecham Corporation · 2007
- Pyrimidinones as melanin concentrating hormone receptor 19US 7,285,557 B2SmithKline Beecham Corporation · 2007
- Process for the production of direct-positive photographic images8US 4,139,387 AAgfa-Gevaert · 1979
- Dissolution of hexamine in non-aqueous solvent1US 10,633,602 B2Ecolab USA Inc. · 2020
- Dissolution of hexamine in non-aqueous solvent1US 11,292,971 B2Ecolab USA Inc. · 2022