A23F 5/223
Using flocculating, precipitating, adsorbing or complex-forming agents, or ion-exchangers
Official title: {using flocculating, precipitating, adsorbing or complex-forming agents, or ion-exchangers}
A23F5/223 (Using flocculating, precipitating, adsorbing or complex-forming agents, or ion-exchangers) appears on 51 US grants and 12 published applications in this corpus.
Search patents in A23F- Granted patents
- 51
- Published applications
- 12
- Assignees
- 24
- Inventors
- 86
- Latest grant
- 16 May 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 2 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 2 |
| 2016 | 1 | 0 |
| 2017 | 0 | 2 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 2 |
| 2021 | 1 | 0 |
| 2022 | 1 | 1 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Pretreated clay composition and process for selective removal of planar molecules from solutions16 May 2023US 11,647,768 B2International Business Machines Corporation
- Caffeine production method22 Feb 2022US 11,252,975 B2Societe des Produits Nestle S. A.
- Programmable polymer caffeine extraction6 Jul 2021US 11,051,529 B2The Decaf Company, LLC
- Method for producing composition containing purified chlorogenic acids24 Apr 2018US 9,950,985 B2Kao Corporation
- Method for manufacturing refined chlorogenic acids composition5 Apr 2016US 9,301,939 B2Kao Corporation
- Pretreated clay composition for selective removal of planar molecules from solutions12 May 2022US 2022/0142213 A1International Business Machines Corporation
- Caffeine production method3 Sep 2020US 2020/0275675 A1Societes Des Produits Nestle S.A.
- Purine base adsorption material, purine base adsorption filter using the same, purine base adsorption column filler, and purine base removal system using the same30 Jul 2020US 2020/0238251 A1National Institute for Materials Science
- Apparatus and methods for removing caffeine from brewed, caffeinated coffee28 Feb 2019US 2019/0059410 A1
- Programmable polymer caffeine extraction15 Nov 2018US 2018/0325138 A1The Decaf Company, LLC
Most cited
By later US patents
- Filter with zeolitic adsorbent attached to individual exposed surfaces of an electret-treated fibrous matrix28US 5,906,743 AKimberly-Clark Worldwide, Inc. · 1999
- Removal of caffeine by selective adsorption using zeolite adsorbents26US 4,331,694 AUnion Carbide Corporation · 1982
- Process for treating an aqueous extract of a vegetable material24US 4,160,042 A1979
- Process for separating a substance from a liquid medium containing the substance in dissolved form19US 4,089,778 ABattelle Development Corporation · 1978
- Decaffeination of vegetable material17US 4,031,251 ASociete d'Assistance Technique pour Produits Nestle S. A. · 1977