A47C 7/441
With adjustable elasticity
Official title: {with adjustable elasticity}
A47C7/441 (With adjustable elasticity) appears on 205 US grants and 134 published applications in this corpus.
Search patents in A47C- Granted patents
- 205
- Published applications
- 134
- Assignees
- 97
- Inventors
- 247
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 4 |
| 2006 | 2 | 2 |
| 2007 | 1 | 4 |
| 2008 | 2 | 0 |
| 2009 | 2 | 5 |
| 2010 | 0 | 3 |
| 2011 | 3 | 2 |
| 2012 | 3 | 5 |
| 2013 | 2 | 5 |
| 2014 | 2 | 15 |
| 2015 | 15 | 9 |
| 2016 | 8 | 8 |
| 2017 | 7 | 6 |
| 2018 | 7 | 7 |
| 2019 | 11 | 11 |
| 2020 | 9 | 6 |
| 2021 | 6 | 4 |
| 2022 | 5 | 8 |
| 2023 | 10 | 8 |
| 2024 | 6 | 9 |
| 2025 | 5 | 6 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and method for manufacturing a support frame for a seat assembly1 Sep 2026US 12,721,443 B2Illinois Tool Works Inc.
- Tilt control system for a chair30 Jun 2026US 12,667,196 B2Steelcase Inc.
- Chair tilt system with leaf spring26 May 2026US 12,635,796 B2Fellowes, Inc.
- Chair for the sitting of a user21 Apr 2026US 12,604,985 B2Rexsitt Italia S.R.L.
- Active chair24 Mar 2026US 12,582,229 B2Advanced Biomechanical Solutions, LLC
- Seat spreading member for outdoor fixed chair, and outdoor fixed chair5 Mar 2026US 2026/0060429 A1Hangzhou Creative Living Co., Ltd.
- Reclining chair with counterbalance adjustment system19 Feb 2026US 2026/0047686 A1Current Products Corp.
- Portable rebounding device with adjustable and collapsible features29 Jan 2026US 2026/0026628 A1Rocking Inc.
- Chair including a leaf spring in contact with a linkage to provide resistance to tilting of a backrest of the chair1 Jan 2026US 2026/0000206 A1
- Support force adjustment assembly and chair2 Oct 2025US 2025/0302199 A1Comfort Office Furniture Co., Ltd Guangdong
Most cited
By later US patents
- Chair seat-and-back support167US 4,889,385 AAmerican Seating Company · 1989
- Swivel tilt mechanism for chair129US 4,711,491 A1987
- Ergonomic chair124US 4,981,326 ASteelcase Strafor · 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