F03B 5/00
Machines or engines characterised by non-bladed rotors
Official title: Machines or engines characterised by non-bladed rotors, e.g. serrated, using friction
F03B5/00 (Machines or engines characterised by non-bladed rotors) appears on 46 US grants and 49 published applications in this corpus.
Search patents in F03B- Granted patents
- 46
- Published applications
- 49
- Assignees
- 30
- Inventors
- 72
- Latest grant
- 5 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 1 | 2 |
| 2010 | 2 | 4 |
| 2011 | 0 | 5 |
| 2012 | 3 | 0 |
| 2013 | 3 | 2 |
| 2014 | 1 | 3 |
| 2015 | 0 | 3 |
| 2016 | 1 | 4 |
| 2017 | 5 | 2 |
| 2018 | 2 | 2 |
| 2019 | 1 | 1 |
| 2020 | 0 | 2 |
| 2021 | 2 | 3 |
| 2022 | 0 | 0 |
| 2023 | 3 | 1 |
| 2024 | 1 | 5 |
| 2025 | 4 | 3 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fluid turbine system and method of use5 May 2026US 12,618,390 B2Tap Energy LLC
- Apparatus to convert hydrokinetic energy into electrical energy14 Apr 2026US 12,601,321 B2
- Fluid flow converter with support arrangement10 Feb 2026US 12,546,297 B2Enairon AB
- Fluid flow converter with interstage flow channel10 Feb 2026US 12,546,298 B2Enairon AB
- Fluid turbines25 Nov 2025US 12,480,520 B2Exergi Incorporated
- Turbine for Cross-flow Kite Power System and Method of the same23 Apr 2026US 2026/0110286 A1National Tsing Hua University
- Apparatus to convert hydrokinetic energy into electrical energy2 Apr 2026US 2026/0092589 A1
- Fluid turbines8 Jan 2026US 2026/0009397 A1Exergi Incorporated
- Fluid flow converter with interstage flow channel3 Jul 2025US 2025/0215866 A1Enairon AB
- Fluid Turbine System and Method of Use19 Jun 2025US 2025/0198378 A1Tap Energy LLC
Most cited
By later US patents