C01G 35/003
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}
C01G35/003 (Preparation involving a liquid-liquid extraction, an adsorption or an ion-exchange) appears on 15 US grants and 7 published applications in this corpus.
Search patents in C01G- Granted patents
- 15
- Published applications
- 7
- Assignees
- 21
- Inventors
- 47
- Latest grant
- 24 Nov 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
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| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
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| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 2 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 2 |
| 2019 | 0 | 1 |
| 2020 | 2 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for extracting and recovering tantalum present in an acid aqueous phase by means of an ionic liquid, and use of such an ionic liquid for extracting the tantalum from an acid aqueous phase24 Nov 2020US 10,844,459 B2Centre National De La Recherche Scientifique
- Proton-conductive complex oxide and fuel cell using same as electrolyte20 Oct 2020US 10,807,878 B2National Institute of Advanced Industrial Science and Technology
- Tributyl phosphate-nitrate solvent extraction process for producing high purity nuclear grade rare earth metal oxides3 Nov 2015US 9,174,855 B2The Secretary, Department of Atomic Energy, Government of India
- Purification method for producing high purity niobium compound and/or tantalum compound8 May 2007US 7,214,362 B2Stella Chemifa Corporation
- Purification method for producing high purity niobium compound and/or tantalum compound13 Feb 2007US 7,175,823 B2Stella Chemifa Corporation
- Process for extracting tantalum and niobium from an aqueous acidic solution8 Jan 2026US 2026/0009106 A1Centre National De La Recherche Scientifique
- Adsorbent and compound recovery method using same14 Feb 2019US 2019/0046954 A1KYOCERA Corporation
- Process for extracting and recovering tantalum present in an acid aqueous phase by means of an ionic liquid, and use of such an ionic liquid for extracting the tantalum from an acid aqueous phase16 Aug 2018US 2018/0230572 A1Centre National De La Recherche Scientifique
- Proton-conductive complex oxide and fuel cell using same as electrolyte28 Jun 2018US 2018/0179080 A1National Institute of Advanced Industrial Science and Technology
- Tributyl phosphate-nitrate solvent extraction process for producing high purity nuclear grade rare earth metal oxides3 Oct 2013US 2013/0259777 A1The Secretary, Department of Atomic Energy, Govt. of India
Most cited
By later US patents
- Method of purifying tantalum35US 4,673,554 ASumitomo Chemical Company, Limited · 1987
- Process for the recovery and separation of tantalum and niobium15US 5,209,910 AHermann C. Starck GmbH & Co. KG · 1993
- Method of recovering tantalum from silicon-containing tantalum scrap14US 4,446,115 ATokyo Shibaura Denki Kabushiki Kaisha · 1984
- Recovery of metal values from process residues14US 5,437,848 ACabot Corporation · 1995
- Recovery of metal values and hydrofluoric acid from tantalum and columbium waste sludge12US 5,023,059 A1991