B61D 17/02
Reducing air resistance by modifying contour
Official title: reducing air resistance by modifying contour {; Constructional features for fast vehicles sustaining sudden variations of atmospheric pressure, e.g. when crossing in tunnels}
B61D17/02 (Reducing air resistance by modifying contour) appears on 81 US grants and 79 published applications in this corpus.
Search patents in B61D- Granted patents
- 81
- Published applications
- 79
- Assignees
- 49
- Inventors
- 215
- Latest grant
- 6 May 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 4 |
| 2010 | 4 | 5 |
| 2011 | 1 | 4 |
| 2012 | 2 | 6 |
| 2013 | 5 | 7 |
| 2014 | 6 | 3 |
| 2015 | 5 | 5 |
| 2016 | 4 | 5 |
| 2017 | 4 | 5 |
| 2018 | 1 | 4 |
| 2019 | 4 | 5 |
| 2020 | 6 | 6 |
| 2021 | 6 | 4 |
| 2022 | 2 | 3 |
| 2023 | 6 | 0 |
| 2024 | 2 | 3 |
| 2025 | 2 | 0 |
| 2026 | 0 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Ultralight two-track train that does not derail4 Mar 2025US 12,240,504 B2
- System of a side skirt for a car of a multi-car vehicle and a side skirt support18 Jun 2024US 12,012,155 B2Dellner Couplers AB
- Trim assembly for a vehicle30 Apr 2024US 11,970,219 B2Siemens Mobility Austria GmbH
- Bogie of a rail vehicle19 Dec 2023US 11,845,477 B2Siemens Mobility Austria GmbH
- Roof Hood for a Rail Vehicle1 Oct 2026US 2026/0296508 A1Siemens Mobility Austria GmbH
- Porous deflector for vehicle30 Jul 2026US 2026/0217283 A1Deflect LLC
- Aerodynamic railcar panel21 May 2026US 2026/0138650 A1Composite Sign Products Inc.
- Railroad car having multiple penetration resistant and protective structures14 May 2026US 2026/0131831 A1Hgmotive, Inc.
- Slot device for high-speed train drag-control30 Apr 2026US 2026/0116436 A1Northwestern Polytechnical University
Most cited
By later US patents
- Process and device for reducing the drag in the rear region of a vehicle, for example, a road or rail vehicle or the like62US 5,407,245 ADaimler-Benz Aktiengesellschaft · 1995
- Method and apparatus for reducing drag on a moving body39US 5,374,013 A1994
- Aerodynamic drag reduction for railcars35US 4,756,256 AGunderson LLC · 1988
- Drag-reducing device33US 8,608,228 B22013
- Railway freight car30US 5,584,252 ATrinity Industries, Inc. · 1996