C07C 55/21
Dicarboxylic acids containing twelve carbon atoms
C07C55/21 (Dicarboxylic acids containing twelve carbon atoms) appears on 18 US grants and 10 published applications in this corpus.
Search patents in C07C- Granted patents
- 18
- Published applications
- 10
- Assignees
- 14
- Inventors
- 31
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 1 | 0 |
| 2021 | 1 | 2 |
| 2022 | 1 | 2 |
| 2023 | 1 | 0 |
| 2024 | 1 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for preparing linear hydrocarbon double acid with cyclic hydrocarbon oxidation catalyst24 Mar 2026US 12,583,811 B2Hanwha Solutions Corporation
- Solid-solid separation process for long chain dicarboxylic acids9 Jul 2024US 12,030,848 B2Cathay Biotech Inc.
- Method and system for extracting long chain dicarboxylic acid7 Nov 2023US 11,806,670 B2Cathay Biotech Inc.
- Solid-solid separation process for long chain dicarboxylic acids30 Aug 2022US 11,427,525 B2Cathay Biotech Inc.
- Method and system for refining long chain dicarboxylic acid26 Oct 2021US 11,155,512 B2Cathay Biotech Inc.
- Method for preparing linear hydrocarbon double acid with cyclic hydrocarbon oxidation catalyst17 Oct 2024US 2024/0343668 A1Hanwha Solutions Corporation
- Solid-solid separation process for long chain dicarboxylic acids24 Nov 2022US 2022/0371982 A1Cathay Biotech Inc.
- Method and system for extracting long chain dicarboxylic acid7 Apr 2022US 2022/0105469 A1Cathay Biotech Inc.
- Method and system for refining long chain dicarboxylic acid24 Jun 2021US 2021/0188756 A1Cathay Biotech Inc.
- Solid-solid separation process for long chain dicarbozylic acids28 Jan 2021US 2021/0024446 A1Cathay Biotech Inc.
Most cited
By later US patents
- Cationic aqueous bituminous emulsion-aggregate slurries31US 4,810,299 AWestvaco Corporation · 1989
- .alpha.-halogenated dicarboxylic acids, pharmaceutical compositions and method of use24US 4,908,385 AEpis S.A. · 1990
- Cationic aqueous bituminous emulsion-aggregate slurries with improved curing rates13US 5,034,060 AWestvaco Corporation · 1991
- Cationic aqueous bituminous emulsion-aggregate slurries preparation12US 4,877,457 AWestvaco Corporation · 1989
- Cationic aqueous bituminous emulsion-aggregate slurries preparation9US 5,008,382 AWestvaco Corporation · 1991