A47C 1/03255
With a central column
Official title: {with a central column, e.g. rocking office chairs}
A47C1/03255 (With a central column) appears on 664 US grants and 521 published applications in this corpus.
Search patents in A47C- Granted patents
- 664
- Published applications
- 521
- Assignees
- 208
- Inventors
- 709
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 6 | 0 |
| 1986 | 4 | 0 |
| 1987 | 15 | 0 |
| 1988 | 14 | 0 |
| 1989 | 11 | 0 |
| 1990 | 6 | 0 |
| 1991 | 8 | 0 |
| 1992 | 8 | 0 |
| 1993 | 10 | 0 |
| 1994 | 19 | 0 |
| 1995 | 12 | 0 |
| 1996 | 11 | 0 |
| 1997 | 11 | 0 |
| 1998 | 13 | 0 |
| 1999 | 22 | 0 |
| 2000 | 16 | 0 |
| 2001 | 9 | 10 |
| 2002 | 21 | 33 |
| 2003 | 23 | 27 |
| 2004 | 32 | 35 |
| 2005 | 26 | 20 |
| 2006 | 18 | 21 |
| 2007 | 18 | 20 |
| 2008 | 11 | 22 |
| 2009 | 20 | 23 |
| 2010 | 20 | 16 |
| 2011 | 14 | 23 |
| 2012 | 13 | 16 |
| 2013 | 13 | 13 |
| 2014 | 11 | 30 |
| 2015 | 28 | 33 |
| 2016 | 26 | 18 |
| 2017 | 27 | 18 |
| 2018 | 18 | 19 |
| 2019 | 21 | 19 |
| 2020 | 23 | 15 |
| 2021 | 17 | 14 |
| 2022 | 12 | 10 |
| 2023 | 11 | 14 |
| 2024 | 11 | 23 |
| 2025 | 8 | 17 |
| 2026 | 12 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Weight responsive chair30 Jun 2026US 12,667,191 B2Haworth, Inc.
- Motion mechanism for a chair and chair30 Jun 2026US 12,667,194 B2L&P Property Management Company
- Chair tilt system with leaf spring26 May 2026US 12,635,796 B2Fellowes, Inc.
- Chair assembly12 May 2026US 12,622,523 B2Dick's Sporting Goods, Inc.
- Seating furniture31 Mar 2026US 12,588,763 B2Eb-Invent GmbH
- Multi Pivot Tilting Seat Support Structure1 Oct 2026US 2026/0294105 A1Levitask
- Weight responsive chair1 Oct 2026US 2026/0294106 A1Haworth, Inc.
- Chair1 Oct 2026US 2026/0294107 A1Drohbros.Inc
- Chair assembly16 Jul 2026US 2026/0198690 A1Dick's Sporting Goods, Inc.
- Ergonomic Motion Chair With Automatic Seat Movement Lock9 Jul 2026US 2026/0191331 A1Moovlab Inc.
Most cited
By later US patents
- Chair with novel seat construction283US 5,871,258 ASteelcase Inc. · 1999
- Lumbar support for a chair266US 6,572,190 B2HON Technology Inc. · 2003
- Woven fabric membrane for a seating surface256US 6,035,901 AHerman Miller, Inc. · 2000
- Office chair249US 6,059,368 AHerman Miller, Inc. · 2000
- Lumbar device238US 6,394,546 B1Steelcase Development Corporation · 2002