C07C 45/78
Separation
Official title: Separation; Purification; Stabilisation; Use of additives
C07C45/78 (Separation) appears on 1,243 US grants and 732 published applications in this corpus.
Search patents in C07C- Granted patents
- 1,243
- Published applications
- 732
- Assignees
- 548
- Inventors
- 2,910
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 29 | 0 |
| 1977 | 24 | 0 |
| 1978 | 24 | 0 |
| 1979 | 19 | 0 |
| 1980 | 24 | 0 |
| 1981 | 26 | 0 |
| 1982 | 19 | 0 |
| 1983 | 20 | 0 |
| 1984 | 29 | 0 |
| 1985 | 26 | 0 |
| 1986 | 28 | 0 |
| 1987 | 20 | 0 |
| 1988 | 32 | 0 |
| 1989 | 25 | 0 |
| 1990 | 38 | 0 |
| 1991 | 32 | 0 |
| 1992 | 27 | 0 |
| 1993 | 31 | 0 |
| 1994 | 18 | 0 |
| 1995 | 26 | 0 |
| 1996 | 18 | 0 |
| 1997 | 12 | 0 |
| 1998 | 21 | 0 |
| 1999 | 32 | 0 |
| 2000 | 15 | 0 |
| 2001 | 33 | 3 |
| 2002 | 35 | 25 |
| 2003 | 28 | 23 |
| 2004 | 18 | 30 |
| 2005 | 12 | 23 |
| 2006 | 16 | 18 |
| 2007 | 21 | 17 |
| 2008 | 20 | 20 |
| 2009 | 18 | 27 |
| 2010 | 22 | 24 |
| 2011 | 11 | 31 |
| 2012 | 12 | 16 |
| 2013 | 20 | 29 |
| 2014 | 23 | 30 |
| 2015 | 28 | 36 |
| 2016 | 38 | 46 |
| 2017 | 40 | 40 |
| 2018 | 33 | 30 |
| 2019 | 36 | 38 |
| 2020 | 43 | 48 |
| 2021 | 31 | 28 |
| 2022 | 28 | 34 |
| 2023 | 14 | 24 |
| 2024 | 22 | 45 |
| 2025 | 18 | 15 |
| 2026 | 8 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process for the recovery of low-boiling point components from an ethanol stream7 Jul 2026US 12,674,183 B2Braskem S/A
- Process for preparing (Z)-7-tetradecen-2-one30 Jun 2026US 12,668,561 B2Shin-Etsu Chemical Co., Ltd.
- Process for the continuous production of either acrolein or acrylic acid as the target product from propene9 Jun 2026US 12,649,710 B2BASF SE
- Methods for producing higher alcohols from waste plastic pyrolysis oil and the higher alcohols obtained therefrom26 May 2026US 12,637,397 B2ExxonMobil Chemical Patents Inc.
- Method for purifying an aqueous-alcoholic feedstock comprising ethanol and acetaldehyde5 May 2026US 12,616,917 B2Compagnie Generale Des Etablissements Michelin
- Method for Producing Odorants and Fragrances on a Thin-Film Evaporator1 Oct 2026US 2026/0297005 A1
- Beta-alkoxy ketone having long-lasting fragrance and preparation method and use thereof1 Oct 2026US 2026/0297007 A1Guangzhou Flower Flavours Fragrances Co., Ltd
- Reduced coenzyme q10 composition and production method for the same1 Oct 2026US 2026/0297008 A1Kaneka Corporation
- Process for the recovery of low-boiling point components from an ethanol stream1 Oct 2026US 2026/0297630 A1Braskem S/A
- Process for the recovery of low-boiling point components from an ethanol stream1 Oct 2026US 2026/0297631 A1Braskem S/A
Most cited
By later US patents
- Programmable manifold system for automatic fluid delivery151US 5,562,614 AAdvanced Cardiovascular Systems, Inc. · 1996
- Process for the separation of mixtures of substances103US 3,969,196 AStudiengesellschaft Kohle mbH · 1976
- Process for stereoselective synthesis of prostacyclin derivatives98US 6,809,223 B2United Therapeutics Corporation · 2004
- Process for stereoselective synthesis of prostacyclin derivatives91US 6,700,025 B2United Therapeutics Corporation · 2004
- Separation process using pervaporation and dephlegmation80US 6,755,975 B2Membrane Technology and Research, Inc. · 2004