B04B 9/02
Electric motor drives
Official title: Electric motor drives {(dynamo-electric machines associated with centrifuges H02K7/16)}
B04B9/02 (Electric motor drives) appears on 116 US grants and 141 published applications in this corpus.
Search patents in B04B- Granted patents
- 116
- Published applications
- 141
- Assignees
- 85
- Inventors
- 317
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 2 |
| 2003 | 2 | 1 |
| 2004 | 2 | 3 |
| 2005 | 1 | 1 |
| 2006 | 1 | 3 |
| 2007 | 1 | 1 |
| 2008 | 2 | 1 |
| 2009 | 1 | 5 |
| 2010 | 1 | 6 |
| 2011 | 1 | 5 |
| 2012 | 2 | 6 |
| 2013 | 2 | 3 |
| 2014 | 7 | 5 |
| 2015 | 7 | 7 |
| 2016 | 4 | 8 |
| 2017 | 2 | 4 |
| 2018 | 9 | 11 |
| 2019 | 5 | 7 |
| 2020 | 7 | 7 |
| 2021 | 9 | 10 |
| 2022 | 2 | 10 |
| 2023 | 4 | 10 |
| 2024 | 5 | 9 |
| 2025 | 8 | 7 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Centrifugal separators and skid for separating biocomponents and methods of use15 Sep 2026US 12,734,530 B2Life Technologies Corporation
- Separator insert, separator and method for exchanging a separator insert19 May 2026US 12,629,699 B2GEA Westfalia Separator Group GmbH
- Modular centrifugal separator for cleaning gas7 Apr 2026US 12,594,561 B2Alfdex AB
- Method for processing an object with the aid of a planar drive system13 Jan 2026US 12,525,861 B2Beckhoff Automation GmbH
- Crankcase ventilation systems including integrated sensors and controller4 Nov 2025US 12,460,564 B2Cummins Filtration Inc.
- A method for controlling an electric motor of a centrifugal separator1 Oct 2026US 2026/0295601 A1Alfdex AB
- Centrifuge27 Aug 2026US 2026/0249307 A1GEA Westfalia Separator Group GmbH
- Separator insert, separator and method for exchanging a separator insert27 Aug 2026US 2026/0249308 A1GEA Westfalia Separator Group GmbH
- Centrifugal separator20 Aug 2026US 2026/0241393 A1Alfa Laval Corporate AB
- Centrifuge, in particular laboratory centrifuge, method for servicing the centrifuge, and method for manufacturing the centrifuge11 Jun 2026US 2026/0158502 A1Eppendorf AG
Most cited
By later US patents
- Centrifuge86US 4,822,331 A1989
- Centrifugal filter for removing soot from engine oil84US 6,517,475 B1Analytical Engineering, Inc. · 2003
- Portable D.C. powered centrifuge70US 5,924,972 A1999
- Vacuum centrifuge with magnetic drive68US 4,226,669 ASavant Instruments, Inc. · 1980
- Apparatus and method for obtaining a rapid hematocrit59US 4,738,655 AUtah Bioresearch, Inc. · 1988