B64F 1/221
For handling seaplanes
Official title: for handling seaplanes
B64F1/221 (For handling seaplanes) appears on 7 US grants and 11 published applications in this corpus.
Search patents in B64F- Granted patents
- 7
- Published applications
- 11
- Assignees
- 7
- Inventors
- 23
- Latest grant
- 31 Dec 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 2 |
| 2019 | 0 | 1 |
| 2020 | 2 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Hydraulic system for rapid mooring device of offshore operation helicopter and control method31 Dec 2024US 12,179,937 B1Yanshan University
- Deployable apparatus to prevent helicopter rollover4 Apr 2023US 11,618,588 B2Textron Innovations Inc.
- Water vehicles27 Sep 2022US 11,453,466 B2Liquid Robotics, Inc.
- Deployable apparatus to prevent helicopter rollover17 Nov 2020US 10,836,511 B2Bell Helicopter Textron Inc.
- Water vehicles5 May 2020US 10,640,180 B2Liquid Robotics, Inc.
- Lift for an airplane6 Nov 2025US 2025/0340309 A1
- Hydraulic system for rapid mooring device of offshore operation helicopter and control method2 Jan 2025US 2025/0002174 A1Yanshan University
- Seaplane towing device5 Jan 2023US 2023/0002079 A1
- Deployable Apparatus to Prevent Helicopter Rollover28 Jan 2021US 2021/0024226 A1Bell Textron Inc.
- Water vehicles10 Sep 2020US 2020/0283104 A1Liquid Robotics, Inc.
Most cited
By later US patents