A47C 4/20
With legs pivotably connected to seat or underframe
Official title: with legs pivotably connected to seat or underframe
A47C4/20 (With legs pivotably connected to seat or underframe) appears on 261 US grants and 218 published applications in this corpus.
Search patents in A47C- Granted patents
- 261
- Published applications
- 218
- Assignees
- 100
- Inventors
- 347
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 7 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 2 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 1 |
| 2002 | 11 | 10 |
| 2003 | 8 | 10 |
| 2004 | 4 | 4 |
| 2005 | 9 | 6 |
| 2006 | 9 | 4 |
| 2007 | 6 | 5 |
| 2008 | 6 | 7 |
| 2009 | 2 | 6 |
| 2010 | 3 | 6 |
| 2011 | 6 | 10 |
| 2012 | 5 | 7 |
| 2013 | 3 | 6 |
| 2014 | 17 | 6 |
| 2015 | 6 | 9 |
| 2016 | 1 | 6 |
| 2017 | 4 | 11 |
| 2018 | 10 | 11 |
| 2019 | 10 | 12 |
| 2020 | 16 | 15 |
| 2021 | 14 | 11 |
| 2022 | 12 | 7 |
| 2023 | 5 | 10 |
| 2024 | 10 | 17 |
| 2025 | 12 | 14 |
| 2026 | 11 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Seat board of foldable chair and bottom frame thereof6 Oct 2026US 12,751,549 B2
- Folding chair with structural enhancements for increased load bearing28 Jul 2026US 12,690,687 B2Zhuhai Shichang Metals Ltd.
- Chair14 Jul 2026US 12,677,950 B2Lifetime Products, Inc.
- Foldable rocking chair frame and rocking chair14 Jul 2026US 12,677,951 B1Ninghai Jiarun Hardware Co., Ltd.
- Origami-based foldable furniture assembly26 May 2026US 12,635,791 B2A&C Future, Inc.
Most cited
By later US patents