C07B 63/00
Purification
Official title: Purification; Separation (separation of optically-active compounds C07B57/00); Stabilisation; Use of additives
C07B63/00 (Purification) appears on 532 US grants and 522 published applications in this corpus.
Search patents in C07B- Granted patents
- 532
- Published applications
- 522
- Assignees
- 386
- Inventors
- 1,429
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 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 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 9 | 0 |
| 1995 | 9 | 0 |
| 1996 | 15 | 0 |
| 1997 | 9 | 0 |
| 1998 | 15 | 0 |
| 1999 | 14 | 0 |
| 2000 | 13 | 0 |
| 2001 | 18 | 2 |
| 2002 | 18 | 15 |
| 2003 | 17 | 20 |
| 2004 | 12 | 18 |
| 2005 | 7 | 9 |
| 2006 | 13 | 7 |
| 2007 | 8 | 12 |
| 2008 | 3 | 17 |
| 2009 | 9 | 23 |
| 2010 | 8 | 30 |
| 2011 | 18 | 20 |
| 2012 | 15 | 17 |
| 2013 | 13 | 22 |
| 2014 | 22 | 28 |
| 2015 | 23 | 22 |
| 2016 | 30 | 28 |
| 2017 | 19 | 14 |
| 2018 | 21 | 50 |
| 2019 | 31 | 34 |
| 2020 | 29 | 31 |
| 2021 | 29 | 30 |
| 2022 | 17 | 27 |
| 2023 | 15 | 18 |
| 2024 | 16 | 11 |
| 2025 | 12 | 11 |
| 2026 | 9 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of producing carboxylic acid18 Aug 2026US 12,709,763 B2Toray Industries, Inc.
- Method for quenching peroxycarboxylic acid runaway reactions28 Jul 2026US 12,692,228 B2Ecolab USA Inc.
- Chemical distillation system with in situ analytics16 Jun 2026US 12,654,113 B2Astrotech Technologies, Inc.
- Low halide lanthanum precursors for vapor deposition19 May 2026US 12,630,568 B2Versum Materials US, LLC
- Purification of 2,5-furandicarboxylic acid, dimethyl ester and other esterified products12 May 2026US 12,624,013 B2Archer Daniels Midland Company
- Process for producing high-grade fatty acide polyol esters, particularly fatty acid glycerol esters27 Aug 2026US 2026/0250601 A1IOI OIeo GmbH
- Crystalline allulose9 Jul 2026US 2026/0193288 A1Samyang Corporation
- Nano-emulsion compositions containing cannabinoids4 Jun 2026US 2026/0152478 A1Cct Sciences, LLC
- Processes for the preparation of 4-{8-amino-3-[(2s)-1-(but-2-ynoyl)-pyrrolidin-2-yl]imidazo[1,5-a]-pyrazin-1-yl}n-(pyridin-2-yl)-benzamide23 Apr 2026US 2026/0109701 A1
- Method for producing purified quaternary ammonium compound aqueous solution16 Apr 2026US 2026/0103437 A1Tokuyama Corporation
Most cited
By later US patents
- Separation of olefins from paraffins using ionic liquid solutions83US 6,339,182 B12002
- Method for dehydration and concentration of aqueous solution containing organic compound64US 4,978,430 AUbe Industries, Ltd. · 1990
- Method of, and apparatus for, and irradiation unit for oxidative photopurification62US 5,753,106 A1998
- 2-cyanoacrylic esters60US 5,821,380 ABASF SE · 1998
- Metal-ligand complex catalyzed processes44US 6,252,121 B1Union Carbide Chemicals & Plastics Technology Corporation · 2001