C07D 311/40
Separation
Official title: Separation, e.g. from natural material; Purification
C07D311/40 (Separation) appears on 41 US grants and 48 published applications in this corpus.
Search patents in C07D- Granted patents
- 41
- Published applications
- 48
- Assignees
- 40
- Inventors
- 135
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 4 | 2 |
| 2003 | 2 | 5 |
| 2004 | 2 | 3 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 4 |
| 2014 | 0 | 3 |
| 2015 | 1 | 3 |
| 2016 | 2 | 2 |
| 2017 | 3 | 4 |
| 2018 | 1 | 2 |
| 2019 | 1 | 2 |
| 2020 | 1 | 0 |
| 2021 | 0 | 3 |
| 2022 | 0 | 2 |
| 2023 | 2 | 2 |
| 2024 | 4 | 1 |
| 2025 | 1 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for decomposing flavonoid glycoside and method for producing flavonoid14 Jan 2025US 12,195,436 B2Resonac Corporation
- Method for extracting and separating dihydromyricetin from rattan tea23 Jul 2024US 12,043,603 B2Shanghai Spark Pharmaceutical Co., Ltd.
- Method of extracting myricetin from Xanthoceras sorbifolia Bunge2 Apr 2024US 11,944,599 B2Hebei Ruilong Biotechnology Co., Ltd
- Method for decomposing flavonoid glycoside and method for producing flavonoid30 Jan 2024US 11,884,641 B2Resonac Corporation
- Semi synthetic method for dihydroquercetin23 Jan 2024US 11,878,963 B2Hefei Lifeon Pharmaceutical Co., Ltd.
- Antioxidant composition comprising 5-deoxyflavonoids4 Jun 2026US 2026/0151315 A1
- Purification process for polymethoxylated flavonoids and compositions obtained therefrom8 May 2025US 2025/0145581 A1Firmenich SA
- Alternative novel material to botulinum neurotoxin and preparation method thereof1 May 2025US 2025/0134851 A1Intron Biotechnology, Inc.
- Method of extracting myricetin from xanthoceras sorbifolia bunge7 Mar 2024US 2024/0075008 A1Hebei Ruilong Biotechnology Co., Ltd
- Method for preparing dihydroquercetin22 Jun 2023US 2023/0192639 A1Hefei Lifeon Pharmaceutical Co., Ltd.
Most cited
By later US patents
- Isoflavones and related compounds, methods of preparing and using and antioxidant compositions containing same87US 4,390,559 AZ-L Limited Partnership · 1983
- Recovery of isoflavones from soy molasses66US 5,990,291 AProtein Technologies International, Inc. · 1999
- Isoflavones and related compounds, methods of preparing and using and antioxidant compositions containing same57US 4,366,082 AZ-L Limited Partnership · 1982
- Process for the isolation and purification of isoflavones53US 5,679,806 AHauser, Inc. · 1997
- Fermentation method of preparing antioxidants42US 4,366,248 AZ-L Limited Partnership · 1982