C22B 7/04
Working-up slag
C22B7/04 (Working-up slag) appears on 465 US grants and 377 published applications in this corpus.
Search patents in C22B- Granted patents
- 465
- Published applications
- 377
- Assignees
- 385
- Inventors
- 1,215
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 24 | 0 |
| 1978 | 11 | 0 |
| 1979 | 5 | 0 |
| 1980 | 8 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 5 | 0 |
| 1986 | 6 | 0 |
| 1987 | 7 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 9 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 9 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 17 | 0 |
| 2000 | 21 | 0 |
| 2001 | 16 | 1 |
| 2002 | 13 | 8 |
| 2003 | 5 | 7 |
| 2004 | 5 | 4 |
| 2005 | 5 | 5 |
| 2006 | 2 | 5 |
| 2007 | 1 | 15 |
| 2008 | 2 | 7 |
| 2009 | 6 | 12 |
| 2010 | 10 | 12 |
| 2011 | 14 | 18 |
| 2012 | 9 | 14 |
| 2013 | 12 | 14 |
| 2014 | 10 | 11 |
| 2015 | 8 | 18 |
| 2016 | 14 | 20 |
| 2017 | 14 | 21 |
| 2018 | 9 | 12 |
| 2019 | 20 | 20 |
| 2020 | 14 | 19 |
| 2021 | 9 | 21 |
| 2022 | 15 | 20 |
| 2023 | 11 | 23 |
| 2024 | 15 | 27 |
| 2025 | 19 | 26 |
| 2026 | 13 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Copper-tin-nickel brazing material prepared by alloys recycled from E-waste, preparation method therefor and system thereof15 Sep 2026US 12,735,765 B2Zhengzhou Research Institute of Mechanical Engineering Co., Ltd.
- Processing methods and processing apparatus11 Aug 2026US 12,703,895 B2Altek Europe Limited
- Comprehensive utilization method for valuable elements in hydrometallurgical slag of laterite nickel ore23 Jun 2026US 12,662,715 B2Gem Co., Ltd.
- Method for recovering metal zinc from solid metallurgical wastes19 May 2026US 12,630,900 B2Engitec Technologies S.P.A.
- Recovery method of Ra-226, production method of Ra-226 solution, and Ac-225 solution production method of Ac-225 solution5 May 2026US 12,618,122 B2National Institutes for Quantum Science and Technology
- Method for refining metal27 Aug 2026US 2026/0250795 A1Ferrum Technologies FlexCo
- Lithium recovery from slags20 Aug 2026US 2026/0242895 A1Umicore AG & Co. KG
- Comprehensive utilization method for steel making slag13 Aug 2026US 2026/0234753 A1Yuanchu Technology (Beijing) Co., Ltd.
- Melting furnace13 Aug 2026US 2026/0235363 A1Kubota Corporation
- Process and plant for slag treatment23 Jul 2026US 2026/0209874 A1Danieli & C. Officine Meccaniche SpA
Most cited
By later US patents
- Method for indirect chemical reduction of metals in waste154US 5,322,547 AMolten Metal Technology, Inc. · 1994
- Method for chemically reducing metals in waste compositions137US 5,324,341 AMolten Metal Technology, Inc. · 1994
- Method of indirect chemical reduction of metals in waste131US 5,358,549 AMolten Metal Technology, Inc. · 1994
- Process for precipitating compounds from zinc metal baths by means of a hollow rotary body that can be driven about an axis and is dipped into the molten zinc89US 6,364,930 B1Andritz Patentverwaltungsgellschaft mbH · 2002
- Process and device for precipitating compounds from zinc metal baths by means of a hollow rotary body that can be driven about an axis and is dipped into the molten zinc86US 6,656,415 B2Andritz Patentverwaltungsgesellschaft M.B.H. · 2003