B64C 1/1446
Inspection hatches
Official title: {Inspection hatches (for engine cowls B64D29/08)}
B64C1/1446 (Inspection hatches) appears on 132 US grants and 137 published applications in this corpus.
Search patents in B64C- Granted patents
- 132
- Published applications
- 137
- Assignees
- 62
- Inventors
- 303
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 3 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 3 | 8 |
| 2010 | 2 | 3 |
| 2011 | 3 | 2 |
| 2012 | 4 | 5 |
| 2013 | 2 | 9 |
| 2014 | 5 | 3 |
| 2015 | 14 | 8 |
| 2016 | 8 | 12 |
| 2017 | 11 | 7 |
| 2018 | 5 | 11 |
| 2019 | 8 | 17 |
| 2020 | 16 | 6 |
| 2021 | 8 | 6 |
| 2022 | 7 | 5 |
| 2023 | 6 | 2 |
| 2024 | 3 | 14 |
| 2025 | 7 | 6 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for applying a cover to an aircraft wing and aircraft wing obtained by said method21 Jul 2026US 12,686,487 B2Airbus Operations S.L.U.
- Aircraft access cover12 May 2026US 12,623,790 B2Airbus Operations GmbH
- Latch24 Feb 2026US 12,559,970 B2SACS Aerospace GmbH
- Support structure for an aircraft17 Feb 2026US 12,552,517 B2The Boeing Company
- Propulsion assembly for an aircraft, comprising an intermediate cowl of the stationary, removable type, mounted on a hinge system10 Feb 2026US 12,545,416 B2Safran Nacelles
- Design principles for electric aircraft23 Jul 2026US 2026/0208849 A1Coöperatie Elysian Aircraft Company U.A.
- Protection for an aircraft fuselage18 Jun 2026US 2026/0167316 A1
- Hinge for a door of an aircraft, with passage for a cable2 Apr 2026US 2026/0092483 A1
- Locking apparatus for a service access in an external structure of an aircraft, service access, aircraft and method for producing a locking apparatus for a service access in an external structure of an aircraft12 Mar 2026US 2026/0070650 A1Airbus Defence and Space GmbH
- Aircraft panel removal tool and work aid23 Oct 2025US 2025/0326098 A1Textron Innovations Inc.
Most cited
By later US patents
- Fire-resistant cowls, particularly for aircraft engines73US 4,735,841 AAvions Marcel Dassault-Breguet Aviation · 1988
- Latch with adjustable handle61US 8,864,185 B2Alcoa Inc. · 2014
- Safety device for aircraft doors or hatches27US 4,042,193 AVereinigte Flugtechnische Werke-Fokker GmbH · 1977
- Access panel assembly for aircraft fuel tank27US 4,579,248 AThe Boeing Company · 1986
- Fuel tank access door for aircraft19US 4,291,816 ACanadair Limited · 1981