F27B 14/04
Crucible or pot furnaces: adapted for treating the charge in vacuum or
Official title: adapted for treating the charge in vacuum or special atmosphere
F27B14/04 (Crucible or pot furnaces: adapted for treating the charge in vacuum or) appears on 79 US grants and 86 published applications in this corpus.
Search patents in F27B- Granted patents
- 79
- Published applications
- 86
- Assignees
- 77
- Inventors
- 237
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 2 | 6 |
| 2003 | 4 | 2 |
| 2004 | 2 | 7 |
| 2005 | 2 | 2 |
| 2006 | 3 | 5 |
| 2007 | 3 | 1 |
| 2008 | 1 | 4 |
| 2009 | 3 | 3 |
| 2010 | 2 | 1 |
| 2011 | 0 | 4 |
| 2012 | 3 | 2 |
| 2013 | 2 | 6 |
| 2014 | 1 | 3 |
| 2015 | 1 | 7 |
| 2016 | 4 | 6 |
| 2017 | 5 | 3 |
| 2018 | 3 | 3 |
| 2019 | 4 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 2 |
| 2022 | 2 | 3 |
| 2023 | 2 | 5 |
| 2024 | 2 | 1 |
| 2025 | 3 | 4 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Process for processing hard metal15 Sep 2026US 12,735,766 B2Betek GmbH & Co. KG
- Crucible lifting device10 Mar 2026US 12,571,592 B2Kenmec Mechanical Engineering Co., Ltd.
- Apparatus and method for production of high purity copper-based alloys29 Jul 2025US 12,371,760 B2Doggone Investment Co. LLC
- Ion implanter, ion implantation method, and semiconductor device manufacturing method18 Mar 2025US 12,255,039 B2Sumitomo Heavy Industries, Ltd.
- Apparatus and method for production of high purity copper-based alloys25 Feb 2025US 12,234,531 B2Doggone Investment Co. LLC
- Solid precursor heating device for induction heating25 Jun 2026US 2026/0181748 A1Jiashan Zhuoyi Kaisheng Technology Co., Ltd.
- Apparatus and method for production of high purity copper-based alloys21 May 2026US 2026/0139346 A1Doggone Investment Co. LLC
- Apparatus and method for production of high purity copper-based alloys25 Dec 2025US 2025/0388997 A1Doggone Investment Co. LLC
- Apparatus and method for production of high purity copper-based alloys24 Apr 2025US 2025/0129449 A1Doggone Investment Co. LLC
- Twin coil arc sweep system for vacuum arc remelting furnaces10 Apr 2025US 2025/0119992 A1Titanium Metals Corporation
Most cited
By later US patents
- Vacuum melting/casting method to reduce inclusions31US 5,226,946 AHowmet Corporation · 1993
- Method and apparatus for inert gas blanketing of a reactor or vessel used to process materials at elevated temperatures such as an induction furnace used to remelt metals for casting29US 5,518,221 AAir Products and Chemicals, Inc. · 1996
- Method and apparatus for melting titanium using a combination of plasma torches and direct arc electrodes16US 6,868,896 B22005
- Charging appliance for melting units14US 4,984,952 ALeybold Aktiengesellschaft · 1991
- Microwave melter12US 4,330,698 ADoryokuro Kakunenryo Kaihatsu Jigyodan · 1982