B64C 11/005
Spiral-shaped propellers
Official title: {Spiral-shaped propellers}
B64C11/005 (Spiral-shaped propellers) appears on 12 US grants and 15 published applications in this corpus.
Search patents in B64C- Granted patents
- 12
- Published applications
- 15
- Assignees
- 6
- Inventors
- 18
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 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 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 2 |
| 2023 | 1 | 1 |
| 2024 | 3 | 2 |
| 2025 | 1 | 0 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Propeller21 Oct 2025US 12,448,098 B2Sharrow Engineering LLC
- Apparatuses based on jet-effect and thermoelectric effect13 Aug 2024US 12,063,858 B2Soliton Holdings Corporation, Delaware Corporation
- Propeller9 Jul 2024US 12,030,606 B2Sharrow Engineering LLC
- Propeller6 Feb 2024US D1,013,605 S1Sharrow Engineering LLC · Design
- Propeller16 May 2023US 11,649,026 B2Sharrow Engineering LLC
- Variable toroidal propeller1 Oct 2026US 2026/0296613 A1Alpraaz AB
- Rotary Propeller Featuring Enhanced Slot Effect Through Staggered Blade Configurations4 Jun 2026US 2026/0153096 A1
- Propeller15 Jan 2026US 2026/0015071 A1Sharrow Engineering LLC
- Modified variable helix cylinders and propeller and nozzle using same21 Nov 2024US 2024/0383593 A1
- Propeller10 Oct 2024US 2024/0336341 A1Sharrow Engineering LLC
Most cited
By later US patents
- Rotary machine with non-positive displacement usable as a pump, compressor, propulsor, generator or drive turbine27US 5,139,391 A1992
- High velocity propeller13US 5,810,289 ASager Innovations Inc. · 1998
- Propeller8US 9,926,058 B2Sharrow Engineering LLC · 2018
- Toroidal propeller3US 10,836,466 B2Massachusetts Institute of Technology · 2020
- Propeller3US D1,013,605 S1Sharrow Engineering LLC · 2024 · Design