C22B 21/064
Using inert or reactive gases
Official title: {using inert or reactive gases (C22B21/066 and C22B21/068 take precedence)}
C22B21/064 (Using inert or reactive gases) appears on 182 US grants and 118 published applications in this corpus.
Search patents in C22B- Granted patents
- 182
- Published applications
- 118
- Assignees
- 73
- Inventors
- 275
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 9 | 0 |
| 1999 | 5 | 0 |
| 2000 | 11 | 0 |
| 2001 | 6 | 5 |
| 2002 | 5 | 4 |
| 2003 | 7 | 7 |
| 2004 | 6 | 1 |
| 2005 | 0 | 3 |
| 2006 | 0 | 5 |
| 2007 | 0 | 2 |
| 2008 | 3 | 7 |
| 2009 | 3 | 6 |
| 2010 | 8 | 6 |
| 2011 | 1 | 4 |
| 2012 | 3 | 3 |
| 2013 | 3 | 10 |
| 2014 | 3 | 3 |
| 2015 | 5 | 9 |
| 2016 | 8 | 10 |
| 2017 | 4 | 8 |
| 2018 | 6 | 2 |
| 2019 | 9 | 2 |
| 2020 | 3 | 8 |
| 2021 | 6 | 0 |
| 2022 | 1 | 2 |
| 2023 | 1 | 2 |
| 2024 | 1 | 3 |
| 2025 | 1 | 4 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Degassing launder28 Oct 2025US 12,454,738 B2Pyrotek, Inc.
- Device for trapping hydrogen19 Mar 2024US 11,932,920 B2Constellium Issoire
- Molten metal transfer structure and method19 Sep 2023US 11,759,854 B2Molten Metal Equipment Innovations, LLC
- Method of casting articles from aluminum alloys31 May 2022US 11,345,979 B2Obshchestvo S Ogranichennoy Otvetstvennost'yu “Obedinennaya Kompaniya Rusal Inzhenerno-Tekhnologicheskiy Tsentr”
- Open exit molten metal gas injection pump7 Dec 2021US 11,193,492 B2Pyrotek, Inc.
- Acoustic rotary liquid processor29 Jan 2026US 2026/0028694 A1
- Degassing launder15 Jan 2026US 2026/0015689 A1
- Low-Pressure Mold and Production Process for Aluminum Alloy Integrated Brake Calipers18 Dec 2025US 2025/0381595 A1CITIC Dicastal Co., Ltd.
- Energy efficient salt-free recovery of metal from dross23 Oct 2025US 2025/0327150 A1Pyrogenesis Canada Inc.
- Heat-treatment-free die-cast aluminum alloy and preparation method and application thereof13 Feb 2025US 2025/0051885 A1Xiaomi EV Technology Co., Ltd.
Most cited
By later US patents
- Rotary blade-type apparatus for dissolving alloy elements and dispersing gas in an aluminum bath133US 4,802,656 AAluminium Pechiney · 1989
- Rotary device for treating molten metal131US 4,634,105 AFoseco International Limited · 1987
- Gas dispersion apparatus for molten aluminum refining128US 5,364,078 APraxair Technology, Inc. · 1994
- Rotary degasser126US 5,678,807 A1997
- Apparatus for treating molten metal124US 4,804,168 AShowa Aluminum Corporation · 1989