A47C 7/443
With coil springs
Official title: {with coil springs}
A47C7/443 (With coil springs) appears on 253 US grants and 195 published applications in this corpus.
Search patents in A47C- Granted patents
- 253
- Published applications
- 195
- Assignees
- 122
- Inventors
- 315
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 0 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 7 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 4 |
| 2003 | 3 | 0 |
| 2004 | 2 | 3 |
| 2005 | 0 | 7 |
| 2006 | 6 | 7 |
| 2007 | 4 | 5 |
| 2008 | 5 | 1 |
| 2009 | 1 | 7 |
| 2010 | 3 | 6 |
| 2011 | 4 | 3 |
| 2012 | 4 | 8 |
| 2013 | 2 | 10 |
| 2014 | 7 | 15 |
| 2015 | 19 | 19 |
| 2016 | 13 | 10 |
| 2017 | 9 | 7 |
| 2018 | 9 | 10 |
| 2019 | 13 | 9 |
| 2020 | 10 | 7 |
| 2021 | 8 | 6 |
| 2022 | 5 | 7 |
| 2023 | 9 | 15 |
| 2024 | 8 | 12 |
| 2025 | 7 | 8 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Motion mechanism for a chair and chair30 Jun 2026US 12,667,194 B2L&P Property Management Company
- Tilt control system for a chair30 Jun 2026US 12,667,196 B2Steelcase Inc.
- Chairback structure capable of providing dynamic support for users in different sitting postures9 Jun 2026US 12,648,649 B2Newtral Furniture Technology Inc.
- Portable rocking chair12 May 2026US 12,622,522 B1Ninghai Jiarun Hardware Co., Ltd.
- Rocking chair28 Apr 2026US 12,611,032 B2Zhejiang Sunshine Leisure Products Co., Ltd.
- Ergonomic chair18 Jun 2026US 2026/0165483 A1Kinetik Solutions, LLC
- Lightweight seat for high-density configuration and cluster of adjacent seat for high-density configurations7 May 2026US 2026/0123756 A1Inmuebles Molí, Sl
- Seating arrangement2 Apr 2026US 2026/0090644 A1Steelcase Inc.
- Seating system19 Feb 2026US 2026/0047685 A1
- Reclining chair with counterbalance adjustment system19 Feb 2026US 2026/0047686 A1Current Products Corp.
Most cited
By later US patents
- Swivel tilt mechanism for chair129US 4,711,491 A1987
- Ergonomic chair124US 4,981,326 ASteelcase Strafor · 1991
- Ergonomic chair123US 5,035,466 AKrueger International, Inc. · 1991
- Articulated double back for chairs115US 4,157,203 ACenter for Design Research and Development N.V. · 1979
- Chair tilt and chair height control apparatus113US 5,029,940 AWestinghouse Electric Corp. · 1991