C07C 263/20
Separation
Official title: Separation; Purification
C07C263/20 (Separation) appears on 190 US grants and 158 published applications in this corpus.
Search patents in C07C- Granted patents
- 190
- Published applications
- 158
- Assignees
- 64
- Inventors
- 548
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 5 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 5 |
| 2005 | 1 | 5 |
| 2006 | 4 | 6 |
| 2007 | 1 | 6 |
| 2008 | 3 | 6 |
| 2009 | 7 | 4 |
| 2010 | 3 | 5 |
| 2011 | 1 | 6 |
| 2012 | 3 | 4 |
| 2013 | 2 | 2 |
| 2014 | 5 | 4 |
| 2015 | 7 | 7 |
| 2016 | 5 | 6 |
| 2017 | 10 | 9 |
| 2018 | 8 | 8 |
| 2019 | 7 | 4 |
| 2020 | 6 | 10 |
| 2021 | 7 | 22 |
| 2022 | 8 | 7 |
| 2023 | 7 | 4 |
| 2024 | 6 | 13 |
| 2025 | 6 | 7 |
| 2026 | 7 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for preparing isocyanate compound6 Oct 2026US 12,753,150 B2Hanwha Solutions Corporation
- Xylylene diisocynate composition, preparation method therefor and use thereof14 Jul 2026US 12,679,923 B2Wanhua Chemical Group Co., Ltd.
- Method of separating phosgene and hydrogen chloride23 Jun 2026US 12,662,376 B2BASF SE
- Xylylene diisocyanate composition and optical composition comprising same9 Jun 2026US 12,649,818 B2SK Pucore Co., Ltd.
- Distillation of polyisocyanates19 May 2026US 12,630,662 B2Covestro Deutschland AG
- Method for preparing isocyanate by combining supercritical phosgenation method with piping method1 Oct 2026US 2026/0297019 A1Mojia (Shanghai) Biotech Co., Ltd
- Method for preparing diisocyanate11 Jun 2026US 2026/0159475 A1Hanwha Solutions Corporation
- Compounds and compositions for intracellular delivery of therapeutic agents19 Mar 2026US 2026/0078082 A1ModernaTX, Inc.
- Method for treating residue from the production of organic isocyanates5 Mar 2026US 2026/0062379 A1Covestro Deutschland AG
- Isocyanate composition, modified composition and polyurethane elastomer29 Jan 2026US 2026/0028446 A1Wanhua Chemical Group Co., Ltd.
Most cited
By later US patents
- Compounds and compositions for intracellular delivery of therapeutic agents143US 9,868,691 B2ModernaTX, Inc. · 2018
- Compounds and compositions for intracellular delivery of therapeutic agents62US 9,868,692 B2ModernaTX, Inc. · 2018
- Process for the preparation of (cyclo)aliphatic diisocyanates60US 4,847,408 ABayer Aktiengesellschaft · 1989
- Process for the distillation of a mixture of isomeric diisocyanatodiphenylmethanes57US 7,649,108 B2Bayer MaterialScience AG · 2010
- Compounds and compositions for intracellular delivery of therapeutic agents50US 10,442,756 B2ModernaTX, Inc. · 2019