F27D 99/0075
Gas curtain seals
Official title: {Gas curtain seals}
F27D99/0075 (Gas curtain seals) appears on 61 US grants and 22 published applications in this corpus.
Search patents in F27D- Granted patents
- 61
- Published applications
- 22
- Assignees
- 47
- Inventors
- 134
- Latest grant
- 20 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 6 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 2 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 3 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 2 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus for heating steel products20 Jan 2026US 12,529,520 B2Danieli & C. Officine Meccaniche SpA
- Device comprising a furnace and method for the use thereof14 Jan 2025US 12,195,388 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- End barrier box and a reflow oven using the end barrier box2 Apr 2024US 11,946,696 B2Illinois Tool Works Inc.
- Furnace for partially heating metal components17 Oct 2023US 11,788,164 B2Benteler Automobiltechnik GmbH
- Substrate pre-baking device21 Apr 2020US 10,629,854 B2Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- Jet-type direct-fired preheating system26 Mar 2026US 2026/0085374 A1Baoshan Iron & Steel Co., Ltd.
- Heat treatment furnace with stable conveyance26 Mar 2026US 2026/0085888 A1Suzhou Nsingle Intelligent Technology Co., Ltd.
- Metallurgical electrode seal4 Dec 2025US 2025/0372778 A1Boston Electrometallurgical Corporation
- Reflow oven13 Mar 2025US 2025/0085055 A1Illinois Tool Works Inc.
- Apparatus for heating steel products28 Sep 2023US 2023/0304740 A1Danieli & C. Officine Meccaniche SpA
Most cited
By later US patents
- Wide laminar fluid doors26US 4,823,680 AUnion Carbide Corporation · 1989
- Continuous kiln23US 5,248,255 AInax Corporation · 1993
- Oxidation oven23US 6,027,337 AC. A. Litzler Co., Inc. · 2000
- Sealing box for a chamber for continuously treating a thin strip product, in particular for a furnace for continuously carbonizing a fiber substrate23US 6,561,799 B2Snecma Propulsion Solide · 2003
- Industrial oven having air recirculating means for minimizing heat loss20US 4,298,341 A1981