B29L 2031/721
Vibration dampening equipment
Official title: {Vibration dampening equipment, e.g. shock absorbers (bumpers B29L2031/3044, springs B29L2031/774)}
B29L2031/721 (Vibration dampening equipment) appears on 141 US grants and 156 published applications in this corpus.
Search patents in B29L- Granted patents
- 141
- Published applications
- 156
- Assignees
- 120
- Inventors
- 389
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 1 |
| 2002 | 6 | 4 |
| 2003 | 2 | 2 |
| 2004 | 4 | 5 |
| 2005 | 0 | 7 |
| 2006 | 4 | 6 |
| 2007 | 0 | 4 |
| 2008 | 7 | 16 |
| 2009 | 1 | 6 |
| 2010 | 3 | 3 |
| 2011 | 4 | 3 |
| 2012 | 7 | 8 |
| 2013 | 5 | 4 |
| 2014 | 6 | 7 |
| 2015 | 5 | 5 |
| 2016 | 5 | 12 |
| 2017 | 4 | 7 |
| 2018 | 7 | 7 |
| 2019 | 14 | 8 |
| 2020 | 3 | 5 |
| 2021 | 3 | 8 |
| 2022 | 4 | 7 |
| 2023 | 5 | 6 |
| 2024 | 4 | 6 |
| 2025 | 2 | 5 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Butt plate15 Sep 2026US 12,736,302 B2Rosa S.P.A.
- Acoustic article23 Jun 2026US 12,664,963 B23M Innovative Properties Company
- Methods of manufacturing gas spring end member assemblies and gas spring assemblies including same12 May 2026US 12,624,738 B2Firestone Industrial Products Company, LLC
- Shock absorber and method of manufacturing the shock absorber31 Mar 2026US 12,590,618 B2Hitachi Astemo, Ltd.
- Bonding method18 Nov 2025US 12,472,696 B2NHK Spring Co., Ltd.
- End member assemblies as well as gas spring assemblies including same20 Aug 2026US 2026/0243325 A1Firestone Industrial Products Company, LLC
- Butt plate16 Apr 2026US 2026/0104229 A1Rosa S.P.A.
- Damper for washing machine cover and manufacturing mold therefor12 Mar 2026US 2026/0071375 A1Seyang Mechatronics. Co., Ltd.
- Bushing for heavy-duty vehicle axle/suspension systems22 Jan 2026US 2026/0022736 A1Hendrickson USA, L L C
- Bumper cap and shock absorber18 Dec 2025US 2025/0383005 A1Hitachi Astemo, Ltd.
Most cited
By later US patents
- Shock absorbing component and construction method281US 6,029,962 ARetama Technology Corporation · 2000
- Resilient bladder for use in footwear187US 6,119,371 ANIKE, Inc. · 2000
- Resilient bladder for use in footwear and method of making the bladder164US 5,993,585 ANIKE, Inc. · 1999
- Method of making polyester elastomer compression spring and resulting product106US 4,198,037 AMiner Enterprises, Inc. · 1980
- Rotary damper with improved connection between cap and housing61US 5,269,397 ANifco Inc. · 1993