C07C 237/50
Carboxylic acid amides, the carbon skeleton of the acid part being further
Official title: having the nitrogen atom of at least one of the carboxamide groups quaternised
C07C237/50 (Carboxylic acid amides, the carbon skeleton of the acid part being further) appears on 5 US grants and 5 published applications in this corpus.
Search patents in C07C- Granted patents
- 5
- Published applications
- 5
- Assignees
- 3
- Inventors
- 17
- Latest grant
- 3 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1997 | 1 | 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 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 1 | 2 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 2 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Ionizable compounds and compositions and uses thereof3 Jun 2025US 12,319,643 B2Nitto Denko Corporation
- Cell cryopreservation protective composition and use thereof15 Nov 2022US 11,497,206 B2Tianjin University
- Ionizable compounds and compositions and uses thereof12 Jul 2022US 11,384,051 B2Nitto Denko Corporation
- Ionizable compounds and compositions and uses thereof1 Jan 2019US 10,167,253 B2Nitto Denko Corporation
- Reaction products of aminoalkylenecarboxylic acids and mineral oil middle distillates which contain them2 Sep 1997US 5,663,435 ABASF SE
- Ionizable compounds and compositions and uses thereof7 Aug 2025US 2025/0250226 A1Nitto Denko Corporation
- Ionizable compounds and compositions and uses thereof4 Aug 2022US 2022/0242820 A1Nitto Denko Corporation
- Ionizable compounds and compositions and uses thereof2 May 2019US 2019/0127318 A1Nitto Denko Corporation
- Cell Cryopreservation Protective Composition, Use Thereof, and Cell Cryopreservation Method7 Feb 2019US 2019/0037832 A1Tianjin University
- Ionizable compounds and compositions and uses thereof29 Dec 2016US 2016/0376229 A1Nitto Denko Corporation
Most cited
By later US patents
- Ionizable compounds and compositions and uses thereof4US 10,167,253 B2Nitto Denko Corporation · 2019
- Ionizable compounds and compositions and uses thereof1US 11,384,051 B2Nitto Denko Corporation · 2022
- Reaction products of aminoalkylenecarboxylic acids and mineral oil middle distillates which contain them1US 5,663,435 ABASF SE · 1997