A47C 1/03279
Of torsion type
Official title: {of torsion type}
A47C1/03279 (Of torsion type) appears on 54 US grants and 47 published applications in this corpus.
Search patents in A47C- Granted patents
- 54
- Published applications
- 47
- Assignees
- 28
- Inventors
- 74
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 0 |
| 2003 | 1 | 2 |
| 2004 | 2 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 3 |
| 2007 | 1 | 1 |
| 2008 | 2 | 1 |
| 2009 | 2 | 2 |
| 2010 | 1 | 2 |
| 2011 | 1 | 2 |
| 2012 | 3 | 1 |
| 2013 | 1 | 3 |
| 2014 | 2 | 3 |
| 2015 | 2 | 3 |
| 2016 | 4 | 4 |
| 2017 | 3 | 0 |
| 2018 | 1 | 2 |
| 2019 | 3 | 1 |
| 2020 | 1 | 3 |
| 2021 | 2 | 2 |
| 2022 | 2 | 3 |
| 2023 | 1 | 0 |
| 2024 | 1 | 3 |
| 2025 | 3 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Seating arrangement6 Jan 2026US 12,514,370 B2Steelcase Inc.
- Seat adjustment module, seat frame, and seat18 Nov 2025US 12,471,709 B2Comfort Office Furniture Co., Ltd Guangdong
- Chair arm assembly18 Feb 2025US 12,226,028 B2Steelcase Inc.
- Body support structure28 Jan 2025US 12,207,737 B2Steelcase Inc.
- Tiltable chair17 Sep 2024US 12,089,741 B2Quali Co., Ltd.
- Seating arrangement2 Apr 2026US 2026/0090644 A1Steelcase Inc.
- Body support structure26 Jun 2025US 2025/0204687 A1Steelcase Inc.
- Chair arm assembly13 Feb 2025US 2025/0049218 A1Steelcase Inc.
- Seat adjustment module, seat frame, and seat26 Sep 2024US 2024/0315450 A1Comfort Office Furniture Co., Ltd Guangdong
- Body support structure2 May 2024US 2024/0138573 A1Steelcase Inc.
Most cited
By later US patents
- Seating furniture119US 4,988,145 ARoeder GmbH Sitzmoebelwerke · 1991
- Chair118US 4,451,085 AWilkhahn & Hahne GmbH & Company · 1984
- Tilt control mechanism for chair90US 6,945,602 B2Haworth, Inc. · 2005
- Chair assembly with upholstery covering86US 8,998,339 B2Steelcase Inc. · 2015
- Tilt control mechanism for a chair79US 7,997,652 B2Haworth, Inc. · 2011