E05F 3/223
Hydraulic power-locks
Official title: {Hydraulic power-locks, e.g. with electrically operated hydraulic valves}
E05F3/223 (Hydraulic power-locks) appears on 46 US grants and 32 published applications in this corpus.
Search patents in E05F- Granted patents
- 46
- Published applications
- 32
- Assignees
- 26
- Inventors
- 55
- Latest grant
- 28 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 6 |
| 2009 | 1 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 7 |
| 2013 | 0 | 2 |
| 2014 | 4 | 0 |
| 2015 | 2 | 0 |
| 2016 | 2 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 2 | 6 |
| 2020 | 2 | 1 |
| 2021 | 3 | 1 |
| 2022 | 1 | 0 |
| 2023 | 2 | 2 |
| 2024 | 0 | 2 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Power-assistance device28 Jan 2025US 12,209,449 B2
- Sulfonated lignin-derived compounds and uses thereof3 Oct 2023US 11,773,537 B2CMBlu Energy AG
- Sulfonated lignin-derived compounds and uses thereof15 Aug 2023US 11,725,340 B2CMBlu Energy AG
- Method for producing low molecular weight aromatic lignin-derived compounds18 Jan 2022US 11,225,756 B2Cmblu Projekt AG
- Regulating valve31 Aug 2021US 11,105,136 B2Geze GmbH
- Sulfonated Lignin-Derived Compounds And Uses Thereof26 Sep 2024US 2024/0318382 A1CMBlu Energy AG
- Power-assistance device29 Feb 2024US 2024/0068289 A1
- Sulfonated Lignin-Derived Compounds And Uses Thereof28 Sep 2023US 2023/0304221 A1CMBlu Energy AG
- Sulfonated Lignin-Derived Compounds and uses Thereof25 May 2023US 2023/0160143 A9Cmblu Projekt AG
- Sulfonated Lignin-Derived Compounds and uses Thereof9 Sep 2021US 2021/0276945 A1Cmblu Projekt AG
Most cited
By later US patents
- Door closure device68US 3,934,306 AFederal Sign and Signal Corporation · 1976
- Zero force hold open door closer55US 4,115,897 AEaton Corporation · 1978
- Door closer delayed action speed control system41US 4,378,612 ASchlage Lock Company LLC · 1983
- Controlled release door holder40US 4,267,619 AThe Stanley Works · 1981
- Drive system for a door or window and method of operating same35US 7,571,515 B2Geze GmbH · 2009