E04H 9/0235
Anti-seismic devices with hydraulic or pneumatic damping
Official title: {Anti-seismic devices with hydraulic or pneumatic damping}
E04H9/0235 (Anti-seismic devices with hydraulic or pneumatic damping) appears on 196 US grants and 146 published applications in this corpus.
Search patents in E04H- Granted patents
- 196
- Published applications
- 146
- Assignees
- 131
- Inventors
- 442
- Latest grant
- 6 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 5 | 0 |
| 1994 | 7 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 11 | 0 |
| 1999 | 9 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 2 |
| 2002 | 7 | 2 |
| 2003 | 3 | 3 |
| 2004 | 4 | 5 |
| 2005 | 4 | 6 |
| 2006 | 2 | 5 |
| 2007 | 3 | 1 |
| 2008 | 2 | 3 |
| 2009 | 1 | 3 |
| 2010 | 1 | 4 |
| 2011 | 2 | 6 |
| 2012 | 5 | 7 |
| 2013 | 4 | 3 |
| 2014 | 8 | 13 |
| 2015 | 5 | 7 |
| 2016 | 5 | 11 |
| 2017 | 10 | 10 |
| 2018 | 5 | 11 |
| 2019 | 8 | 8 |
| 2020 | 5 | 6 |
| 2021 | 5 | 12 |
| 2022 | 11 | 2 |
| 2023 | 7 | 6 |
| 2024 | 4 | 5 |
| 2025 | 3 | 2 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Damping arrangement for a cable6 May 2025US 12,292,094 B2DYWIDAG-Systems International GmbH
- Floating-type base isolation system4 Mar 2025US 12,241,276 B2IHI Corporation
- Intelligent anti-seismic device for shallow foundation ancient buildings, and construction method therefor14 Jan 2025US 12,195,996 B2China Railway 16th Bureau Grouia Co., Ltd.
- Gap caulking device and a caulking method3 Dec 2024US 12,158,022 B2China Three Gorges Corporation
- Particle-based energy dissipation device for structures29 Oct 2024US 12,129,682 B2University of Sharjah
- Floating seismic isolation system4 Jun 2026US 2026/0153136 A1IHI Corporation
- Connecting structure with three-dimensional shock absorption and energy absorption buffering21 May 2026US 2026/0139505 A1Hainan University
- Mechatronic Earthquake Control by a Three-Phase Damper in a Two-Layer Foundation29 Jan 2026US 2026/0028791 A1
- Self-adaptive viscous damping wall31 Jul 2025US 2025/0243663 A1Southeast University
- Passive resettable stiffness damper5 Jun 2025US 2025/0180092 A1
Most cited
By later US patents
- Shock and vibration resistant structures90US 4,766,708 A1988
- Accumulated semi-active hydraulic damper68US 6,755,113 B2Ha Wse Company Limited · 2004
- Damping coefficient switching-type hydraulic damper52US 7,234,574 B2Kajima Corporation · 2007
- Variable damping device for seismic response controlled structure50US 5,311,709 AKajima Corporation · 1994
- Method and apparatus for real-time structure parameter modification46US 5,526,609 AThe Research Foundation of State University of New York · 1996