B29D 22/023
Air springs
Official title: {Air springs; Air bellows (construction of fluid springs F16F9/00)}
B29D22/023 (Air springs) appears on 39 US grants and 36 published applications in this corpus.
Search patents in B29D- Granted patents
- 39
- Published applications
- 36
- Assignees
- 34
- Inventors
- 86
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 2 | 3 |
| 2007 | 1 | 0 |
| 2008 | 2 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 1 |
| 2014 | 1 | 0 |
| 2015 | 2 | 2 |
| 2016 | 1 | 1 |
| 2017 | 1 | 2 |
| 2018 | 0 | 3 |
| 2019 | 2 | 3 |
| 2020 | 3 | 4 |
| 2021 | 1 | 2 |
| 2022 | 3 | 3 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Syndiotactic polybutadiene in non-tire applications23 Dec 2025US 12,503,578 B2Bridgestone Americas Tire Operations, LLC
- Process for producing anti-gravity balance massage type buffer convection airbag and airbag cushion2 May 2023US 11,639,041 B2Dongguan Jiashuan Industrial Co., Ltd.
- Processes for producing cured polymeric products by additive manufacturing27 Sep 2022US 11,453,161 B2Bridgestone Americas Tire Operations, LLC
- Systems and methods of manufacturing flexible spring members for gas spring assemblies19 Jul 2022US 11,390,484 B2Firestone Industrial Products Company, LLC
- Producing a bellows10 May 2022US 11,326,021 B2GKN Driveline International GmbH
- Support surface for a patient support apparatus and method for forming an inflatable bladder assembly for a support surface4 Jun 2026US 2026/0151284 A1Umano Medical Inc.
- Support surface for a patient support apparatus and method for forming an inflatable bladder assembly for a support surface4 Jun 2026US 2026/0151285 A1Umano Medical Inc.
- Automatic apparel machine6 Jun 2024US 2024/0181665 A1Vibracoustic Cv Air Spring Otomotiv Sanayi Ve Ticaret Anonim Sirketi
- Process for the production of a cover wall section of a flexible cover, and cover with a cover wall consisting of at least one cover wall section produced with the process29 Dec 2022US 2022/0410506 A1HÜBNER GmbH & Co.KG
- Syndiotactic Polybutadiene In Non-Tire Applications22 Sep 2022US 2022/0298334 A1Bridgestone Americas Tire Operations, LLC
Most cited
By later US patents
- Balloon catheters for body lumens28US 10,850,076 B2Urotronic, Inc. · 2020
- Balloon catheters for body lumens22US 10,994,104 B2Urotronic, Inc. · 2021
- Elastomer rebound, jounce and related compression springs22US 5,192,057 AMiner Enterprises, Inc. · 1993
- Thermoplastic bellows and method of forming the same19US 5,345,857 AOsmonics, Inc. · 1994
- Airspring and a method for making airspring flexible members11US 4,673,168 AThe Goodyear Tire & Rubber Company · 1987