C22B 9/04
Refining by applying a vacuum
C22B9/04 (Refining by applying a vacuum) appears on 181 US grants and 162 published applications in this corpus.
Search patents in C22B- Granted patents
- 181
- Published applications
- 162
- Assignees
- 152
- Inventors
- 557
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 6 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 3 | 3 |
| 2002 | 5 | 1 |
| 2003 | 2 | 3 |
| 2004 | 2 | 4 |
| 2005 | 3 | 0 |
| 2006 | 1 | 3 |
| 2007 | 0 | 4 |
| 2008 | 1 | 4 |
| 2009 | 4 | 4 |
| 2010 | 2 | 5 |
| 2011 | 1 | 3 |
| 2012 | 5 | 4 |
| 2013 | 3 | 4 |
| 2014 | 7 | 7 |
| 2015 | 2 | 6 |
| 2016 | 5 | 12 |
| 2017 | 9 | 9 |
| 2018 | 5 | 6 |
| 2019 | 6 | 9 |
| 2020 | 6 | 5 |
| 2021 | 9 | 9 |
| 2022 | 8 | 9 |
| 2023 | 4 | 13 |
| 2024 | 10 | 17 |
| 2025 | 9 | 11 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for smelting steel for ultrafine silicon carbide sawing wire9 Jun 2026US 12,649,958 B2Baoshan Iron & Steel Co., Ltd.
- Method of preparing scandium metal7 Apr 2026US 12,595,531 B2Industrial Technology Research Institute
- Device and method for producing an investment casting component31 Mar 2026US 12,589,432 B2ALD Vacuum Technologies GmbH
- Separation of rare earth elements24 Mar 2026US 12,584,193 B2SHINE Technologies, LLC
- Process for the production of crude solder24 Feb 2026US 12,558,744 B2Metallo Belgium
- Apparatus and method for fractionating alloy components in recycled alloy8 Oct 2026US 2026/0308715 A1Hyundai Motor Company
- Apparatus and method for refining liquid metal24 Sep 2026US 2026/0284739 A1Danieli & C. Officine Meccaniche SpA
- Separation of rare earth elements25 Jun 2026US 2026/0176719 A1SHINE Technologies, LLC
- Systems and methods for recovery of molten metal7 May 2026US 2026/0125814 A1Phoenix Tailings, Inc.
- Aluminum-erbium alloy powder for additive manufacturing and preparation method therefor30 Apr 2026US 2026/0117345 A1Accmaterial Technology (Jiangsu) Co., Ltd.
Most cited
By later US patents
- Installation for the treating of a molten metal121US 3,961,778 AGroupement pour les Activites Atomiques et Avancees · 1976
- Gas pump for stirring molten metal107US 4,355,789 A1982
- Method for induction melting reactive metals and alloys54US 4,738,713 AThe Duriron Company, Inc. · 1988
- Continuous filter for molten copper30US 4,277,281 ASouthwire Company · 1981
- Vacuum degassing apparatus for molten glass26US 6,119,484 AAsahi Glass Company, Limited · 2000