F04D 29/20
Mounting rotors on shafts
F04D29/20 (Mounting rotors on shafts) appears on 213 US grants and 203 published applications in this corpus.
Search patents in F04D- Granted patents
- 213
- Published applications
- 203
- Assignees
- 183
- Inventors
- 538
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 9 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 5 | 3 |
| 2003 | 4 | 2 |
| 2004 | 1 | 5 |
| 2005 | 1 | 6 |
| 2006 | 5 | 2 |
| 2007 | 1 | 5 |
| 2008 | 2 | 5 |
| 2009 | 4 | 4 |
| 2010 | 1 | 6 |
| 2011 | 3 | 7 |
| 2012 | 4 | 6 |
| 2013 | 5 | 7 |
| 2014 | 3 | 6 |
| 2015 | 3 | 10 |
| 2016 | 3 | 11 |
| 2017 | 11 | 9 |
| 2018 | 8 | 18 |
| 2019 | 11 | 17 |
| 2020 | 12 | 13 |
| 2021 | 9 | 13 |
| 2022 | 15 | 16 |
| 2023 | 13 | 11 |
| 2024 | 9 | 9 |
| 2025 | 13 | 8 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Dual motor system with flow control17 Mar 2026US 12,580,502 B2Nidec Motor Corporation
- Coupling and rotor shaft for molten metal devices24 Feb 2026US 12,560,169 B2Molten Metal Equipment Innovations, LLC
- Impeller for an implantable, vascular support system13 Jan 2026US 12,523,228 B2Kardion GmbH
- Impeller rotor seal runner with anti-rotation feature7 May 2026US 2026/0126046 A1Pratt & Whitney Canada Corp.
- Micro-axial pump with press-fit impeller30 Apr 2026US 2026/0122846 A1Hewlett Packard Enterprise Development LP
- Mechanically-electrically separated pump16 Apr 2026US 2026/0104049 A1Accton Technology Corporation
- Impeller bearings for pumps22 Jan 2026US 2026/0022706 A1General Electric Company
- Fabrication method for rotor assembly, rotor assembly, and electric pump20 Nov 2025US 2025/0357808 A1Hangzhou Sanhua Research Institute Co., Ltd.
Most cited
By later US patents
- Medical fluid pump167US 5,578,012 ADEKA Products Limited Partnership · 1996
- Drive system for impeller shafts140US 5,092,821 AThe Carborundum Company · 1992
- Method and apparatus for sterilization of a centrifugal pump126US 4,643,641 AMICI Limited Partnership IV · 1987
- Impeller shaft assembly system125US 6,709,234 B2Pyrotek, Inc. · 2004
- Molten metal pump components105US 7,470,392 B22008