A47C 1/03272
With coil springs
Official title: {with coil springs}
A47C1/03272 (With coil springs) appears on 361 US grants and 287 published applications in this corpus.
Search patents in A47C- Granted patents
- 361
- Published applications
- 287
- Assignees
- 136
- Inventors
- 443
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 6 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 9 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 7 | 0 |
| 1998 | 6 | 0 |
| 1999 | 14 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 5 |
| 2002 | 12 | 8 |
| 2003 | 9 | 10 |
| 2004 | 11 | 23 |
| 2005 | 10 | 8 |
| 2006 | 9 | 8 |
| 2007 | 8 | 12 |
| 2008 | 8 | 12 |
| 2009 | 9 | 13 |
| 2010 | 11 | 11 |
| 2011 | 8 | 11 |
| 2012 | 8 | 16 |
| 2013 | 8 | 7 |
| 2014 | 9 | 25 |
| 2015 | 24 | 19 |
| 2016 | 19 | 12 |
| 2017 | 11 | 9 |
| 2018 | 11 | 10 |
| 2019 | 16 | 12 |
| 2020 | 11 | 9 |
| 2021 | 10 | 10 |
| 2022 | 10 | 10 |
| 2023 | 11 | 7 |
| 2024 | 4 | 6 |
| 2025 | 1 | 10 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Weight responsive chair30 Jun 2026US 12,667,191 B2Haworth, Inc.
- Tilt control system for a chair30 Jun 2026US 12,667,196 B2Steelcase Inc.
- Theater chair or seat with a flip-up/flip-down seat member, a reclining back member, and an automatic return9 Jun 2026US 12,648,650 B2Hiddenlake 822 LLC
- Flexible support device for chair back tilting24 Feb 2026US 12,557,910 B2Dongguan Kentec Office Seating Co., Ltd.
- Seating arrangement6 Jan 2026US 12,514,369 B2Steelcase Inc.
- Multi Pivot Tilting Seat Support Structure1 Oct 2026US 2026/0294105 A1Levitask
- Weight responsive chair1 Oct 2026US 2026/0294106 A1Haworth, Inc.
- Ergonomic Motion Chair With Automatic Seat Movement Lock9 Jul 2026US 2026/0191331 A1Moovlab Inc.
- Seating arrangement2 Apr 2026US 2026/0090644 A1Steelcase Inc.
- Theater chair or seat with a flip-up/flip-down seat member, a reclining back member, and an automatic return25 Sep 2025US 2025/0295236 A1Hiddenlake 822 LLC
Most cited
By later US patents
- Chair with novel seat construction283US 5,871,258 ASteelcase Inc. · 1999
- Lumbar device238US 6,394,546 B1Steelcase Development Corporation · 2002
- Chair including novel back construction227US 5,975,634 ASteelcase Development Corporation · 1999
- Chair construction187US 6,523,898 B1Steelcase Development Corporation · 2003
- Seating unit with novel seat construction171US 6,394,548 B1Steelcase Development Corporation · 2002