B22C 21/00
Flasks
Official title: Flasks; Accessories therefor (stripping plates B22C17/06)
B22C21/00 (Flasks) appears on 259 US grants and 225 published applications in this corpus.
Search patents in B22C- Granted patents
- 259
- Published applications
- 225
- Assignees
- 127
- Inventors
- 587
- Latest grant
- 19 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 6 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 1 |
| 2002 | 10 | 10 |
| 2003 | 10 | 6 |
| 2004 | 5 | 10 |
| 2005 | 9 | 14 |
| 2006 | 6 | 4 |
| 2007 | 12 | 16 |
| 2008 | 7 | 8 |
| 2009 | 5 | 6 |
| 2010 | 4 | 5 |
| 2011 | 6 | 8 |
| 2012 | 4 | 8 |
| 2013 | 6 | 8 |
| 2014 | 4 | 8 |
| 2015 | 8 | 19 |
| 2016 | 4 | 11 |
| 2017 | 8 | 10 |
| 2018 | 17 | 15 |
| 2019 | 7 | 8 |
| 2020 | 8 | 14 |
| 2021 | 15 | 17 |
| 2022 | 9 | 8 |
| 2023 | 8 | 4 |
| 2024 | 4 | 3 |
| 2025 | 6 | 3 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Leachable ceramic materials for use in casting19 Aug 2025US 12,390,853 B2Morgan Advanced Ceramics, Inc.
- Green sand mold forming sensor and green sand mold formability evaluation method22 Jul 2025US 12,365,023 B2Sintokogio, Ltd.
- Integral core bumpers15 Jul 2025US 12,358,043 B2Rtx Corporation
- Casting core post and socket joint24 Jun 2025US 12,337,378 B2Rtx Corporation
- Casting mold shaping device and casting mold shaping method17 Jun 2025US 12,330,209 B2Metals Engineering Corporation
- Systems and methods of limiting movement between a shell structure and a core structure of an additively manufactured ceramic mold16 Jul 2026US 2026/0199966 A1GE Vernova Infrastructure Technology LLC
- Clamping device for a core bundle and method for casting13 Nov 2025US 2025/0345845 A1Heinrich Wagner Sinto Maschinenfabrik GmbH
- Casting Core Post and Socket Joint27 Feb 2025US 2025/0065396 A1Rtx Corporation
- Casting Core Post and Socket Joint23 Jan 2025US 2025/0025933 A1Rtx Corporation
- Casting mold shaping device and casting mold shaping method3 Oct 2024US 2024/0326121 A1Metals Engineering Corporation
Most cited
By later US patents
- Investment casting using core with integral wall thickness control means122US 5,296,308 AHowmet Corporation · 1994
- Cores for use in precision investment casting103US 6,637,500 B2United Technologies Corporation · 2003
- Investment casting cores83US 6,929,054 B2United Technologies Corporation · 2005
- Single-cast, high-temperature, thin wall structures and methods of making the same77US 5,295,530 AGeneral Motors Corporation · 1994
- Single-cast, high-temperature thin wall gas turbine component71US 5,545,003 AAllison Engine Company, Inc. · 1996