C07C 13/52
Azulenes
Official title: Azulenes; Completely or partially hydrogenated azulenes
C07C13/52 (Azulenes) appears on 6 US grants and 6 published applications in this corpus.
Search patents in C07C- Granted patents
- 6
- Published applications
- 6
- Assignees
- 7
- Inventors
- 30
- Latest grant
- 26 Apr 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 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 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Molecular host frameworks and methods of making and using same26 Apr 2022US 11,312,681 B2New York University
- Method of producing (-)-rotundone27 Aug 2019US 10,392,673 B2T. Hasegawa Co., Ltd.
- Mono-, oligo- and polymers comprising a 2,6-azulene group and their use as charge transport materials25 Apr 2006US 7,034,174 B2Merck Patent GmbH
- Cyclopentadienyl derivatives and process for their preparation4 May 1999US 5,900,517 AEnichem S.p.A.
- Electrophotographic process utilizing an azulenium salt-containing photosensitive member21 Jan 1986US 4,565,761 ACanon Kabushiki Kaisha
- Precious metal complexes with dihydroazulenyl ligands and use thereof26 Sep 2024US 2024/0317788 A1Umicore AG & Co. KG
- Molecular host frameworks and methods of making and using same12 Dec 2019US 2019/0375706 A1New York University
- Method of producing (-)-rotundone14 Dec 2017US 2017/0356059 A1T. Hasegawa Co., Ltd.
- Azulene and derivatives thereof as colorants20 Aug 2015US 2015/0232398 A1
- Alpha-bulnesene, its preparation and its use19 Apr 2007US 2007/0088090 A1Yangsen Biotechnology Co., Ltd.
Most cited
By later US patents
- Electrophotographic process utilizing an azulenium salt-containing photosensitive member57US 4,565,761 ACanon Kabushiki Kaisha · 1986
- Radiation sensitive organic thin film comprising an azulenium salt14US 4,548,886 ACanon Kabushiki Kaisha · 1985
- Method of producing (-)-rotundone4US 10,392,673 B2T. Hasegawa Co., Ltd. · 2019
- Cyclopentadienyl derivatives and process for their preparation3US 5,900,517 AEnichem S.p.A. · 1999