B64D 2033/0213
Specially adapted for auxiliary power units
Official title: {specially adapted for auxiliary power units (APU's)}
B64D2033/0213 (Specially adapted for auxiliary power units) appears on 113 US grants and 111 published applications in this corpus.
Search patents in B64D- Granted patents
- 113
- Published applications
- 111
- Assignees
- 38
- Inventors
- 216
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 3 |
| 2004 | 0 | 2 |
| 2005 | 3 | 2 |
| 2006 | 2 | 7 |
| 2007 | 2 | 5 |
| 2008 | 5 | 5 |
| 2009 | 4 | 4 |
| 2010 | 4 | 5 |
| 2011 | 3 | 3 |
| 2012 | 7 | 3 |
| 2013 | 2 | 6 |
| 2014 | 5 | 2 |
| 2015 | 4 | 7 |
| 2016 | 5 | 7 |
| 2017 | 6 | 8 |
| 2018 | 4 | 12 |
| 2019 | 12 | 3 |
| 2020 | 5 | 6 |
| 2021 | 6 | 3 |
| 2022 | 4 | 5 |
| 2023 | 6 | 4 |
| 2024 | 7 | 5 |
| 2025 | 5 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air filtering system for an aircraft12 May 2026US 12,623,174 B2Bmc Co., Ltd.
- Heat resistant joining line seal system27 Jan 2026US 12,535,175 B1Honeywell International Inc.
- Sealing device for covering an aperture in a wing part7 Oct 2025US 12,434,810 B2Airbus Operations GmbH
- Aircraft engine assembly for controlling engine oil flow during fire conditions and method for using same3 Jun 2025US 12,320,296 B2Pratt & Whitney Canada Corp.
- Removable mechanical part for acoustic insulation of an air inlet casing13 May 2025US 12,297,773 B2Safran Power Units
- Emergency power generation system for an aircraft22 Jan 2026US 2026/0021900 A1Airbus Operations S.L.U.
- Spray nozzle for cleaning apu25 Dec 2025US 2025/0387811 A1Pratt & Whitney Canada Corp.
- Aircraft engine assembly for controlling engine oil flow during fire conditions and method for using same13 Mar 2025US 2025/0084790 A1Pratt & Whitney Canada Corp.
- Inlet system for auxiliary power unit5 Dec 2024US 2024/0400219 A1Honeywell International Inc.
- Acoustic insulation assembly for an auxiliary power unit having a centrifugal compressor20 Jun 2024US 2024/0200493 A1Safran Power Units
Most cited
By later US patents
- Passive cooling system for auxiliary power unit installation100US 6,651,929 B2Pratt & Whitney Canada Corp. · 2003
- Auxiliary power unit passive cooling system82US 6,092,360 AThe Boeing Company · 2000
- Passive cooling device and method for cooling an auxiliary power unit on an airplane70US 5,655,359 AThe Boeing Company · 1997
- Auxiliary power and thrust unit69US 6,247,668 B1The Boeing Company · 2001
- Scoop and inlet for auxiliary power units and method67US 4,418,879 AThe Boeing Company · 1983