F04D 1/08
The stages being situated concentrically
Official title: the stages being situated concentrically
F04D1/08 (The stages being situated concentrically) appears on 23 US grants and 32 published applications in this corpus.
Search patents in F04D- Granted patents
- 23
- Published applications
- 32
- Assignees
- 27
- Inventors
- 80
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 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 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 1 |
| 2013 | 1 | 2 |
| 2014 | 1 | 0 |
| 2015 | 2 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 2 |
| 2018 | 0 | 0 |
| 2019 | 1 | 5 |
| 2020 | 3 | 4 |
| 2021 | 1 | 5 |
| 2022 | 4 | 4 |
| 2023 | 3 | 2 |
| 2024 | 3 | 2 |
| 2025 | 0 | 3 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Reverse osmosis with free rotor booster pump74US 4,973,408 A1990
- Centrifugal pump impeller support system and apparatus20US 9,677,560 B1Summit ESP, LLC · 2017
- Dual compression rotor15US 8,192,141 B1The United States of America as represented by the Secretary of the Air Force · 2012
- Compact, modular, pump or turbine with integral modular motor or generator and coaxial fluid flow7US 11,323,003 B2Flowserve Management Company · 2022
- Gas turbine engine with dual compression rotor7US 8,726,635 B1The United States of America as represented by the Secretary of the Air Force · 2014