B22D 21/02
Casting exceedingly oxidisable non-ferrous metals
Official title: Casting exceedingly oxidisable non-ferrous metals, e.g. in inert atmosphere (use of inert atmosphere in casting metals in general B22D23/00; apparatus for vacuum casting B22D27/15)
B22D21/02 (Casting exceedingly oxidisable non-ferrous metals) appears on 320 US grants and 516 published applications in this corpus.
Search patents in B22D- Granted patents
- 320
- Published applications
- 516
- Assignees
- 306
- Inventors
- 1,261
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 1 |
| 2003 | 2 | 2 |
| 2004 | 4 | 4 |
| 2005 | 2 | 3 |
| 2006 | 1 | 1 |
| 2007 | 1 | 8 |
| 2008 | 1 | 6 |
| 2009 | 1 | 11 |
| 2010 | 4 | 12 |
| 2011 | 8 | 11 |
| 2012 | 6 | 13 |
| 2013 | 6 | 22 |
| 2014 | 7 | 22 |
| 2015 | 14 | 42 |
| 2016 | 18 | 62 |
| 2017 | 23 | 25 |
| 2018 | 31 | 25 |
| 2019 | 23 | 32 |
| 2020 | 17 | 34 |
| 2021 | 25 | 27 |
| 2022 | 22 | 41 |
| 2023 | 27 | 27 |
| 2024 | 17 | 34 |
| 2025 | 26 | 35 |
| 2026 | 9 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B22D 21/04Casting aluminium or magnesium148
- B22D 21/025Casting heavy metals with high melting point, i.e. 1000 - 1600 degrees95
- B22D 21/027Casting heavy metals with low melting point, i.e. less than 1000 degrees44
- B22D 21/022Casting heavy metals, with exceedingly high melting points, i.e. more than 160043
Recent patents
- Die-casting aluminum alloy without heat-treatment and preparation method and application thereof12 May 2026US 12,623,280 B2Xiaomi EV Technology Co., Ltd.
- Oxidation and SRZ resistant coatings on nickel superalloys12 May 2026US 12,624,420 B2Pratt & Whitney Canada Corp.
- Aluminum alloy forging and manufacturing method thereof12 May 2026US 12,624,422 B2Resonac Corporation
- Aluminum alloy and preparation method thereof, and aluminum alloy structural member12 May 2026US 12,624,423 B2BYD Company Limited
- High-strength thin-gauge checkered steel plate/strip and manufacturing method therefor10 Mar 2026US 12,571,067 B2Baoshan Iron & Steel Co., Ltd.
- Surface Alloying and Surface Compositing of Copper Alloys During Casting to Improve Corrosion Resistance, Wear Resistance, and Machinability1 Oct 2026US 2026/0297718 A1UWM Research Foundation, Inc.
- Oxidation and SRZ Resistant Coatings on Nickel Superalloys17 Sep 2026US 2026/0275460 A1Pratt & Whitney Canada Corp.
- Pulse magnetic field treatment method for eliminating residual stress in copper alloy foils20 Aug 2026US 2026/0242917 A1Taiyuan University of Technology
- Aluminum alloys as anodes for manufacturing aluminum batteries16 Jul 2026US 2026/0204554 A1
- Aluminum alloy material, and preparation method therefor and use thereof18 Jun 2026US 2026/0168056 A1Beijing Chehejia Automobile Technology Co., Ltd.
Most cited
By later US patents
- Apparatus for accreting copper69US 3,942,473 AColumbia Cable & Electric Corporation · 1976
- Centrifugal casting of titanium alloys with improved surface quality, structural integrity and mechanical properties in isotropic graphite molds under vacuum47US 6,776,214 B2Santoku America, Inc. · 2004
- Integrated cast motorcycle chassis and motor housing41US 8,672,077 B2Faster Faster Inc. · 2014
- Castings of metallic alloys with improved surface quality, structural integrity and mechanical properties fabricated in anisotropic pyrolytic graphite molds under vacuum37US 6,705,385 B2Santoku America, Inc. · 2004
- Infrared sensor for the control of plasma-jet spray coating and electric are heating processes32US 4,656,331 AGeneral Electric Company · 1987