C01G 55/001
Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange
Official title: {Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange}
C01G55/001 (Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange) appears on 95 US grants and 19 published applications in this corpus.
Search patents in C01G- Granted patents
- 95
- Published applications
- 19
- Assignees
- 66
- Inventors
- 174
- Latest grant
- 8 Aug 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 6 | 0 |
| 1982 | 5 | 0 |
| 1983 | 7 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 7 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 2 |
| 2015 | 1 | 0 |
| 2016 | 1 | 0 |
| 2017 | 3 | 7 |
| 2018 | 3 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 2 |
| 2022 | 0 | 0 |
| 2023 | 2 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Extraction and recovery of Pd from aqueous solutions8 Aug 2023US 11,718,539 B2
- Electrolytic stripping agent for jig16 May 2023US 11,649,558 B2Okuno Chemical Industries Co., Ltd.
- Membrane electrode assembly and method of making the same30 Jun 2020US 10,700,373 B2Proton Energy Systems, Inc.
- Method for separation of chemically pure Os from metal mixtures2 Oct 2018US 10,087,503 B2The Curators of the University of Missouri
- Process for the preparation and/or purification of ruthenium(III) chloride12 Jun 2018US 9,994,458 B2Heraeus Deutschland GmbH & Co. KG
- Process for the purification of ruthenium with respect to technetium and metal impurities in an aqueous nitric acid solution3 Apr 2025US 2025/0109042 A1
- Method for preparing iridium oxide19 Dec 2024US 2024/0417276 A1Heesung Catalysts Corporation
- System and method for recovering tin and/or palladium from a colloidal suspension30 Sep 2021US 2021/0300782 A1Advanced Research Solutions, LLC
- Extraction and Recovery of Pd From Aqueous Solutions20 May 2021US 2021/0147250 A1LCW Supercritical Technologies Corporation
- Membrane electrode assembly and method of making the same1 Mar 2018US 2018/0062192 A1Proton Energy Systems, Inc.
Most cited
By later US patents
- Removal of heavy metals from waste water61US 4,731,187 AMiyoshi Yushi Kabushiki Kaisha · 1988
- Metal extraction from solution and immobilized chelating agents used therefor38US 4,448,694 ADow Corning Corporation · 1984
- Catalytic process32US 4,399,312 AJohnson Matthey Public Limited Company · 1983
- Process for the recovery of metal values29US 4,765,834 AUnion Carbide Corporation · 1988
- Process for the isolation of noble metals28US 4,925,485 ASKW Trostberg Aktiengesellschaft · 1990