F27D 2021/0057
Security or safety devices
Official title: {Security or safety devices, e.g. for protection against heat, noise, pollution or too much duress; Ergonomic aspects}
F27D2021/0057 (Security or safety devices) appears on 99 US grants and 74 published applications in this corpus.
Search patents in F27D- Granted patents
- 99
- Published applications
- 74
- Assignees
- 95
- Inventors
- 233
- Latest grant
- 13 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 5 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 3 |
| 2003 | 2 | 3 |
| 2004 | 3 | 3 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 2 |
| 2013 | 0 | 2 |
| 2014 | 1 | 2 |
| 2015 | 1 | 11 |
| 2016 | 4 | 2 |
| 2017 | 5 | 6 |
| 2018 | 2 | 2 |
| 2019 | 3 | 2 |
| 2020 | 1 | 10 |
| 2021 | 4 | 5 |
| 2022 | 6 | 5 |
| 2023 | 4 | 3 |
| 2024 | 7 | 4 |
| 2025 | 2 | 6 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F27D 2021/0085Against molten metalIndexing code18
- F27D 2021/0071Against explosionsIndexing code17
- F27D 2021/0078Against the presence of an undesirable element in the atmosphere of theIndexing code17
- F27D 2021/0092Against a jam in the transport line or a production interruptionIndexing code15
- F27D 2021/0064Against noisesIndexing code3
Recent patents
- System and method for monitoring and controlling furnaces13 Jan 2026US 12,523,427 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Flame analytics system11 Nov 2025US 12,467,692 B2Honeywell International Inc.
- Reflow furnace12 Aug 2025US 12,385,694 B2Illinois Tool Works Inc.
- Process for detecting water leaks from smelting furnaces in metal or alloy production plants and related plant17 Dec 2024US 12,169,157 B2Danieli & C. Officine Meccaniche SpA
- Apparatus and process for predicting metal heat treatment system failures10 Sep 2024US 12,085,341 B2AFC-Holcroft, L.L.C.
- Furnace environment inspection system and method27 Aug 2026US 2026/0251396 A1Tallman Technologies Inc.
- Explosion-Proof-Enivironment Bench Top Heating Test Apparatus for Performance Testing of Safety Valve19 Jun 2025US 2025/0198879 A1Korea Gas Safety Corporation
- Oven operating according to risk level, and control method therefor5 Jun 2025US 2025/0180294 A1Samsung Electronics Co., Ltd.
- Method and Device for Detecting a Water Leak in A Metallurgical Melting Furnace8 May 2025US 2025/0146898 A1Cth Conrads Technologie Und Holding AG
- Method and system of predicting safe time of operation for a rotary kiln13 Mar 2025US 2025/0085054 A1Tata Consultancy Services Limited
Most cited
By later US patents
- Carbon monoxide safety system61US 5,576,739 APhy-Con, Inc. · 1996
- Coke plant tunnel repair and flexible joints36US 11,008,518 B2Suncoke Technology and Development LLC · 2021
- Coke plant tunnel repair and anchor distribution28US 11,193,069 B2Suncoke Technology and Development LLC · 2021
- Safety scaffold for metal melting furnaces28US 4,407,392 AWestern Electric Company, Inc. · 1983
- Anchor system for use with fall prevention safety devices26US 5,165,499 A1992