F27D 7/00
Forming, maintaining or circulating atmospheres in heating chambers
F27D7/00 (Forming, maintaining or circulating atmospheres in heating chambers) appears on 723 US grants and 680 published applications in this corpus.
Search patents in F27D- Granted patents
- 723
- Published applications
- 680
- Assignees
- 562
- Inventors
- 1,901
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 12 | 0 |
| 1979 | 9 | 0 |
| 1980 | 18 | 0 |
| 1981 | 8 | 0 |
| 1982 | 8 | 0 |
| 1983 | 7 | 0 |
| 1984 | 12 | 0 |
| 1985 | 7 | 0 |
| 1986 | 8 | 0 |
| 1987 | 8 | 0 |
| 1988 | 13 | 0 |
| 1989 | 18 | 0 |
| 1990 | 20 | 0 |
| 1991 | 8 | 0 |
| 1992 | 9 | 0 |
| 1993 | 12 | 0 |
| 1994 | 15 | 0 |
| 1995 | 6 | 0 |
| 1996 | 10 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 16 | 0 |
| 2000 | 13 | 0 |
| 2001 | 11 | 5 |
| 2002 | 11 | 13 |
| 2003 | 20 | 7 |
| 2004 | 11 | 15 |
| 2005 | 6 | 12 |
| 2006 | 7 | 7 |
| 2007 | 4 | 13 |
| 2008 | 8 | 7 |
| 2009 | 4 | 13 |
| 2010 | 2 | 12 |
| 2011 | 5 | 13 |
| 2012 | 5 | 15 |
| 2013 | 11 | 35 |
| 2014 | 10 | 45 |
| 2015 | 20 | 52 |
| 2016 | 24 | 48 |
| 2017 | 41 | 39 |
| 2018 | 28 | 39 |
| 2019 | 42 | 31 |
| 2020 | 30 | 44 |
| 2021 | 24 | 30 |
| 2022 | 29 | 41 |
| 2023 | 32 | 48 |
| 2024 | 25 | 31 |
| 2025 | 30 | 34 |
| 2026 | 24 | 31 |
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
- Method for providing a rotating shaft into a high pressure, high temperature furnace1 Sep 2026US 12,723,814 B2The Florida State University Research Foundation, Inc.
- Method for providing a rotating shaft into a high pressure, high temperature furnace1 Sep 2026US 12,723,815 B2The Florida State University Research Foundation, Inc.
- Semiconductor high pressure annealing device25 Aug 2026US 12,721,088 B2Tokyo Electron Limited
- Fan assembly11 Aug 2026US 12,704,129 B2Illinois Tool Works Inc.
- Temperature-control device1 Oct 2026US 2026/0297702 A1EBNER Industrieofenbau GmbH
- Heat treatment apparatus and heat treatment method1 Oct 2026US 2026/0298540 A1Tokyo Electron Limited
- Method for providing a rotating shaft into a high pressure, high temperature furnace24 Sep 2026US 2026/0287260 A1The Florida State University Research Foundation, Inc.
- Method for providing a rotating shaft into a high pressure, high temperature furnace24 Sep 2026US 2026/0287261 A1The Florida State University Research Foundation, Inc.
- Heating system and annealing furnace using such system17 Sep 2026US 2026/0276307 A1Ningbo Sachsen Industrial Technology Co.,Ltd.
Most cited
By later US patents
- Heat treatment apparatus468US 9,759,489 B2Tokyo Electron Limited · 2017
- Forced cooling apparatus for heat treatment apparatus370US 5,249,960 ATokyo Electron Sagami Limited · 1993
- Kiln with ventilation system347US 4,863,374 AThe Edward Orton, Jr. Ceramic Foundation · 1989
- Method for providing a magnetic recording transducer148US 8,381,391 B2Western Digital (Fremont), LLC · 2013
- Gas control system for chemical vapor deposition system110US 4,369,031 AThermco Products Corporation · 1983