A23F 3/20
Removing unwanted substances
Official title: Removing unwanted substances ({A23F3/166 takes precedence; } reducing or removing alkaloid content A23F3/38)
A23F3/20 (Removing unwanted substances) appears on 59 US grants and 69 published applications in this corpus.
Search patents in A23F- Granted patents
- 59
- Published applications
- 69
- Assignees
- 38
- Inventors
- 184
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 5 |
| 2006 | 1 | 5 |
| 2007 | 1 | 2 |
| 2008 | 1 | 5 |
| 2009 | 2 | 7 |
| 2010 | 1 | 8 |
| 2011 | 3 | 3 |
| 2012 | 1 | 4 |
| 2013 | 3 | 2 |
| 2014 | 1 | 2 |
| 2015 | 1 | 2 |
| 2016 | 2 | 2 |
| 2017 | 1 | 1 |
| 2018 | 1 | 4 |
| 2019 | 2 | 3 |
| 2020 | 5 | 3 |
| 2021 | 1 | 4 |
| 2022 | 2 | 1 |
| 2023 | 5 | 1 |
| 2024 | 1 | 1 |
| 2025 | 3 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Gynostemma pentaphyllum tea or Gynostemma pentaphyllum tea extract containing gypenoside L and gypenoside LI and antiobesity use thereof16 Jun 2026US 12,653,856 B2Bionic Trading Corporation
- Herbal infusion and decarboxylation device26 Aug 2025US 12,396,467 B2
- Methods for removing bitter taste from liquid beverages3 Jun 2025US 12,317,909 B2
- Nicotinamide dummy template surface molecularly imprinted polymer and preparation method and application thereof4 Feb 2025US 12,214,329 B2Jiangnan University
- Brewed beverages and methods for producing same30 Jan 2024US 11,882,857 B2
- Methods and Systems for Tea Extraction13 Mar 2025US 2025/0081980 A1Florida Food Products, LLC
- Preparation method of tea essences particles16 Jan 2025US 2025/0017233 A1
- Systems and methods for removing bitter taste from liquid beverages9 Jan 2025US 2025/0008987 A1
- Gynostemma pentaphyllum tea or gynostemma pentaphyllum tea extract containing gypenoside l and gypenoside li and antiobesity use thereof4 Apr 2024US 2024/0108675 A1Bionic Trading Corporation
- Herbal Infusion and Decarboxylation Device19 Jan 2023US 2023/0018674 A1
Most cited
By later US patents
- Green tea extract subjected to cation exchange treatment and nanofiltration to improve clarity and color58US 5,879,733 AThe Procter & Gamble Company · 1999
- Removing and recovering plant polyphenols47US 5,141,611 AMemtec Limited · 1992
- Process for making a stable green tea extract and product30US 5,427,806 AThe Procter & Gamble Company · 1995
- Process of making cold water soluble tea concentrates and powders26US 4,004,038 ATea Research Institute of Ceylon · 1977
- Process for a non-clouding, concentrated tea extract23US 4,797,293 AGeneral Foods Corporation · 1989