F02K 1/825
Infrared radiation suppressors
Official title: {Infrared radiation suppressors}
F02K1/825 (Infrared radiation suppressors) appears on 119 US grants and 69 published applications in this corpus.
Search patents in F02K- Granted patents
- 119
- Published applications
- 69
- Assignees
- 51
- Inventors
- 202
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 5 |
| 2006 | 2 | 8 |
| 2007 | 2 | 9 |
| 2008 | 4 | 3 |
| 2009 | 6 | 6 |
| 2010 | 6 | 6 |
| 2011 | 2 | 1 |
| 2012 | 2 | 0 |
| 2013 | 2 | 2 |
| 2014 | 5 | 2 |
| 2015 | 1 | 2 |
| 2016 | 2 | 3 |
| 2017 | 1 | 1 |
| 2018 | 2 | 9 |
| 2019 | 5 | 4 |
| 2020 | 5 | 3 |
| 2021 | 5 | 1 |
| 2022 | 0 | 1 |
| 2023 | 2 | 0 |
| 2024 | 1 | 1 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Cooled variable area nozzle for an aircraft engine17 Mar 2026US 12,578,092 B2Rtx Corporation
- Compact infrared suppressors with ring vanes for gas turbine engines23 Sep 2025US 12,421,914 B2Rolls-Royce North American Technologies Inc.
- Compact infrared suppressors with ring vanes for gas turbine engines31 Dec 2024US 12,180,910 B1Rolls-Royce North American Technologies Inc.
- Passive infrared reduction device15 Aug 2023US 11,725,609 B2The Boeing Company
- Multistage infrared suppression exhaust system21 Mar 2023US 11,608,189 B2Textron Innovations Inc.
- Cooled variable area nozzle for an aircraft engine17 Jul 2025US 2025/0230930 A1Rtx Corporation
- Compact infrared suppressors with ring vanes for gas turbine engines27 Mar 2025US 2025/0101932 A1Rolls-Royce North American Technologies Inc.
- Exhaust systems having adjustable nozzles and related methods2 May 2024US 2024/0140611 A1The Boeing Company
- Multistage infrared suppression exhaust system17 Feb 2022US 2022/0048640 A1Bell Textron Inc.
- Passive infrared reduction device19 Aug 2021US 2021/0254582 A1The Boeing Company
Most cited
By later US patents
- Infrared radiation suppressor for gas turbine engine113US 4,018,046 AAvco Corporation · 1977
- Compact mixer with trimmable open centerbody77US 7,506,501 B2Honeywell International Inc. · 2009
- Spillage drag and infrared reducing flade engine70US 5,404,713 AGeneral Electric Company · 1995
- Rear section of jet power plant installations52US 4,044,555 AHayes International Corporation · 1977
- Apparatus for and method of suppressing infrared radiation emitted from gas turbine engine45US 4,007,587 AAvco Corporation · 1977