F27B 3/045
Multiple chambers
Official title: {Multiple chambers, e.g. one of which is used for charging}
F27B3/045 (Multiple chambers) appears on 111 US grants and 87 published applications in this corpus.
Search patents in F27B- Granted patents
- 111
- Published applications
- 87
- Assignees
- 94
- Inventors
- 250
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 1 |
| 2002 | 2 | 4 |
| 2003 | 3 | 2 |
| 2004 | 2 | 5 |
| 2005 | 2 | 1 |
| 2006 | 0 | 2 |
| 2007 | 2 | 3 |
| 2008 | 0 | 4 |
| 2009 | 4 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 1 |
| 2012 | 2 | 0 |
| 2013 | 1 | 2 |
| 2014 | 2 | 6 |
| 2015 | 0 | 7 |
| 2016 | 6 | 1 |
| 2017 | 7 | 3 |
| 2018 | 2 | 3 |
| 2019 | 0 | 1 |
| 2020 | 2 | 11 |
| 2021 | 2 | 3 |
| 2022 | 6 | 5 |
| 2023 | 4 | 4 |
| 2024 | 5 | 7 |
| 2025 | 2 | 6 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Metal melting apparatus, screen plate for metal melting, and method of melting metal20 May 2025US 12,305,919 B2Tounetsu Co., Ltd.
- Smart molten metal pump1 Apr 2025US 12,263,522 B2Molten Metal Equipment Innovations, LLC
- Molten metal controlled flow launder19 Mar 2024US 11,931,802 B2Molten Metal Equipment Innovations, LLC
- Molten metal transfer system and method19 Mar 2024US 11,931,803 B2Molten Metal Equipment Innovations, LLC
- Wet hearth melting systems and methods for melting solid metals23 Apr 2026US 2026/0110492 A1The Schaefer Group
- Melting Furnace and Method for Melting a Metal Material12 Mar 2026US 2026/0071819 A1Bayerische Motoren Werke Aktiengesellschaft
- Method for operating electric furnace18 Dec 2025US 2025/0383152 A1Hyundai Steel Company
- Melting furnace and method for melting metal by means of an electrically heatable immersion heating element11 Dec 2025US 2025/0377162 A1
- Stack melting apparatus5 Jun 2025US 2025/0180292 A1
Most cited
By later US patents
- Metal scrap submergence system128US 6,217,823 B1Metaullics Systems Co., L.P. · 2001
- Aluminum scrap melting process and apparatus123US 6,074,455 AMetaullics Systems Co., L.P. · 2000
- Stirring molten metal115US 4,008,884 AAlcan Research and Development Limited · 1977
- Scrap melter and impeller113US 6,723,276 B12004
- Molten metal treatment furnace with level control and method112US 6,503,292 B2Alcoa Inc. · 2003