F27B 9/021
Having two or more parallel tracks
Official title: {having two or more parallel tracks}
F27B9/021 (Having two or more parallel tracks) appears on 117 US grants and 50 published applications in this corpus.
Search patents in F27B- Granted patents
- 117
- Published applications
- 50
- Assignees
- 92
- Inventors
- 232
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 5 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 7 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 7 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 4 |
| 2005 | 1 | 2 |
| 2006 | 2 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 5 |
| 2009 | 2 | 2 |
| 2010 | 2 | 2 |
| 2011 | 2 | 1 |
| 2012 | 1 | 3 |
| 2013 | 2 | 3 |
| 2014 | 3 | 5 |
| 2015 | 2 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 4 |
| 2018 | 0 | 3 |
| 2019 | 0 | 0 |
| 2020 | 5 | 0 |
| 2021 | 1 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 2 |
| 2024 | 1 | 5 |
| 2025 | 1 | 4 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Firing furnace8 Sep 2026US 12,729,914 B2Samsung Electro-Mechanics Co., Ltd.
- Heat treatment system17 Feb 2026US 12,553,666 B2NGK Insulators, Ltd.
- Alternating and continuous microwave fiber tow coating thermo-chemical reactor furnace20 Jan 2026US 12,529,143 B2Rtx Corporation
- Oven slot cover22 Jul 2025US 12,366,413 B2SST Systems, Inc.
- Alternating and continuous microwave fiber tow coating thermo-chemical reactor furnace4 Jun 2024US 12,000,049 B2Rtx Corporation
- Transport device and reflow oven comprising transport device16 Oct 2025US 2025/0321054 A1Illinois Tool Works Inc.
- Continuous, high-temperature slab preheating plant for flat semi-finished steel products28 Aug 2025US 2025/0271213 A1SMS group GmbH
- Method of manufacturing silicon nitride substrate19 Jun 2025US 2025/0197299 A1
- Heat treatment furnace6 Mar 2025US 2025/0075977 A1NGK Insulators, Ltd.
- Alternating and continuous microwave fiber tow coating thermo-chemical reactor furnace12 Sep 2024US 2024/0301556 A1Rtx Corporation
Most cited
By later US patents
- Temperature control system for a thermal reactor499US 6,441,350 B1Brooks Automation, Inc. · 2002
- Tunnel oven121US 4,554,437 APet Incorporated · 1985
- Temperature control system for a thermal reactor45US 6,207,937 B1Semitool, Inc. · 2001
- System for extracting contaminants and hydrocarbons from cuttings waste in oil well drilling37US 4,606,283 A1986
- Furnace for heating slabs, billets, rough castings and the like34US 4,421,481 ADidier Engineering GmbH · 1983