E06B 3/481
Wings foldable in a zig-zag manner or bi-fold wings
Official title: {Wings foldable in a zig-zag manner or bi-fold wings}
E06B3/481 (Wings foldable in a zig-zag manner or bi-fold wings) appears on 248 US grants and 224 published applications in this corpus.
Search patents in E06B- Granted patents
- 248
- Published applications
- 224
- Assignees
- 148
- Inventors
- 418
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 0 |
| 2002 | 1 | 1 |
| 2003 | 4 | 6 |
| 2004 | 5 | 3 |
| 2005 | 3 | 2 |
| 2006 | 1 | 5 |
| 2007 | 2 | 4 |
| 2008 | 1 | 2 |
| 2009 | 0 | 6 |
| 2010 | 1 | 7 |
| 2011 | 3 | 6 |
| 2012 | 3 | 9 |
| 2013 | 6 | 10 |
| 2014 | 7 | 12 |
| 2015 | 10 | 11 |
| 2016 | 12 | 20 |
| 2017 | 11 | 20 |
| 2018 | 9 | 22 |
| 2019 | 17 | 19 |
| 2020 | 19 | 16 |
| 2021 | 13 | 12 |
| 2022 | 5 | 8 |
| 2023 | 11 | 9 |
| 2024 | 6 | 5 |
| 2025 | 10 | 7 |
| 2026 | 5 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Door assembly with an engagement mechanism18 Aug 2026US 12,709,940 B2Harper Engineering Co.
- Bi-fold door stop4 Aug 2026US 12,698,666 B1
- Flight deck barrier apparatus4 Aug 2026US 12,698,673 B2Harper Engineering Co.
- Enclosure system14 Jul 2026US 12,680,372 B2
- Barrier door for an aircraft27 Jan 2026US 12,534,179 B2The Boeing Company
- Folding door assembly and components thereof5 Mar 2026US 2026/0062981 A1
- Ceiling access doors with hinges and an insulation dam26 Feb 2026US 2026/0055658 A1A.J. Manufacturing Inc.
- Arrangement comprising at least one folding door or folding-sliding door6 Nov 2025US 2025/0341128 A1Julius Blum GmbH
- Door Assembly with an Engagement Assembly2 Oct 2025US 2025/0304235 A1Harper Engineering Co.
- Door Assembly with an Engagement Mechanism2 Oct 2025US 2025/0305348 A1Harper Engineering Co.
Most cited
By later US patents
- Foldable cover assembly76US 4,747,441 A1988
- Self-closing single-sided accordion fire door51US 6,615,894 B1McKeon Rolling Steel Door Co., Inc. · 2003
- Foldable partition with integral door49US 6,257,523 B1The Boeing Company · 2001
- Airplane container door hinge46US 6,378,172 B1Fabri-Craft, Inc. · 2002
- Secure type folding door41US 4,922,987 AWoodfold-Marco Mfg., Inc. · 1990