A47C 3/18
Chairs or stools with rotatable seat
Official title: Chairs or stools with rotatable seat (adjustable in height by rotation A47C3/24)
A47C3/18 (Chairs or stools with rotatable seat) appears on 428 US grants and 361 published applications in this corpus.
Search patents in A47C- Granted patents
- 428
- Published applications
- 361
- Assignees
- 225
- Inventors
- 684
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 6 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 7 | 0 |
| 1989 | 7 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 11 | 0 |
| 1998 | 11 | 0 |
| 1999 | 11 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 2 |
| 2002 | 5 | 6 |
| 2003 | 6 | 9 |
| 2004 | 3 | 6 |
| 2005 | 4 | 4 |
| 2006 | 6 | 5 |
| 2007 | 2 | 10 |
| 2008 | 5 | 3 |
| 2009 | 6 | 9 |
| 2010 | 3 | 2 |
| 2011 | 3 | 9 |
| 2012 | 7 | 12 |
| 2013 | 5 | 7 |
| 2014 | 14 | 21 |
| 2015 | 14 | 21 |
| 2016 | 19 | 27 |
| 2017 | 14 | 23 |
| 2018 | 20 | 23 |
| 2019 | 30 | 32 |
| 2020 | 25 | 24 |
| 2021 | 26 | 14 |
| 2022 | 18 | 21 |
| 2023 | 23 | 21 |
| 2024 | 18 | 18 |
| 2025 | 14 | 17 |
| 2026 | 10 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Cluster booth1 Sep 2026US 12,721,431 B2NPS Public Furniture Corp.
- Sitting or lying furniture18 Aug 2026US 12,708,210 B2Krall + Roth Services GmbH & Co. KG
- Non-slip plastic chair and non-slip detection device therefor21 Jul 2026US 12,685,392 B1Yongkang Beiqin Industry & Trade Co., Ltd
- Chair assembly12 May 2026US 12,622,523 B2Dick's Sporting Goods, Inc.
- Vehicle seat device7 Apr 2026US 12,594,860 B2Ts Tech Co., Ltd.
- Pivoting support mechanism for chairs and other structures1 Oct 2026US 2026/0294113 A1Krueger International, Inc.
- Chair for the sitting of a user10 Sep 2026US 2026/0262853 A1Cerantola S.P.A.
- Cluster booth6 Aug 2026US 2026/0224028 A1NPS Public Furniture Corp.
- Chair assembly16 Jul 2026US 2026/0198690 A1Dick's Sporting Goods, Inc.
- Low-noise swivel chair16 Jul 2026US 2026/0201925 A1
Most cited
By later US patents
- Chair shell with selective back stiffening145US 4,744,603 ASteelcase Inc. · 1988
- Integrated chair and control143US 4,776,633 ASteelcase Inc. · 1988
- Back shell with selective stiffening113US 5,487,591 ASteelcase Inc. · 1996
- Synchrotilt chair103US 5,725,277 ASteelcase Inc. · 1998
- Structure of a mesh back of a chair100US 6,957,861 B1Comfordy Co., Ltd. · 2005