B64D 27/04
Of piston type
Official title: of piston type
B64D27/04 (Of piston type) appears on 167 US grants and 208 published applications in this corpus.
Search patents in B64D- Granted patents
- 167
- Published applications
- 208
- Assignees
- 97
- Inventors
- 329
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 5 |
| 2004 | 4 | 4 |
| 2005 | 3 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 5 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 1 | 6 |
| 2012 | 1 | 4 |
| 2013 | 2 | 8 |
| 2014 | 6 | 2 |
| 2015 | 2 | 5 |
| 2016 | 6 | 9 |
| 2017 | 5 | 8 |
| 2018 | 6 | 15 |
| 2019 | 11 | 24 |
| 2020 | 19 | 26 |
| 2021 | 16 | 13 |
| 2022 | 15 | 17 |
| 2023 | 20 | 17 |
| 2024 | 19 | 18 |
| 2025 | 12 | 7 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Aircraft9 Jun 2026US 12,649,581 B2Obrist Technologies GmbH
- Tractor aircraft power plant with swirl recovery vanes2 Jun 2026US 12,644,407 B2Pratt & Whitney Canada Corp.
- Power unit12 May 2026US 12,624,666 B2Kawasaki Motors, Ltd.
- Vertical take-off and landing (VTOL) winged air vehicle with complementary angled rotors14 Apr 2026US 12,600,468 B2AeroVironment, Inc.
- Hybrid-electric aircraft propulsion system and method24 Feb 2026US 12,559,243 B2Pratt & Whitney Canada Corp.
- Vertical take-off and landing (vtol) winged air vehicle with complementary angled rotors30 Jul 2026US 2026/0217367 A1AeroVironment, Inc.
- Pusher aircraft power plant with swirl recovery vanes9 Jul 2026US 2026/0194029 A1Pratt & Whitney Canada Corp.
- Tractor aircraft power plant with swirl recovery vanes21 May 2026US 2026/0139618 A1Pratt & Whitney Canada Corp.
- Aerodynamic lifting structures having embedded engines, and associated systems and methods19 Mar 2026US 2026/0077869 A1Cosmic Aerospace, Inc.
- Turbo-compounded engine with exhaust duct acoustic arrangement19 Mar 2026US 2026/0077875 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- Three wing, six-tilt propulsion unit, VTOL aircraft166US 8,800,912 B2Oliver VTOL, LLC · 2014
- Method of operating an engine assembly114US 10,590,867 B2Pratt & Whitney Canada Corp. · 2020
- Marine hulls and drives97US 7,984,684 B22011
- Multi-purpose aircraft88US 5,645,250 A1997
- Three wing, six tilt-propulsion units, VTOL aircraft78US 8,616,492 B2Oliver VTOL, LLC · 2013