F04B 2203/0204
Frequency of the electric current
F04B2203/0204 (Frequency of the electric current) appears on 105 US grants and 119 published applications in this corpus.
Search patents in F04B- Granted patents
- 105
- Published applications
- 119
- Assignees
- 82
- Inventors
- 278
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 2 |
| 2003 | 5 | 2 |
| 2004 | 1 | 4 |
| 2005 | 2 | 5 |
| 2006 | 0 | 5 |
| 2007 | 3 | 1 |
| 2008 | 1 | 6 |
| 2009 | 3 | 3 |
| 2010 | 2 | 12 |
| 2011 | 0 | 6 |
| 2012 | 6 | 1 |
| 2013 | 1 | 6 |
| 2014 | 5 | 6 |
| 2015 | 5 | 3 |
| 2016 | 5 | 1 |
| 2017 | 4 | 4 |
| 2018 | 6 | 7 |
| 2019 | 4 | 2 |
| 2020 | 4 | 2 |
| 2021 | 3 | 10 |
| 2022 | 4 | 8 |
| 2023 | 9 | 6 |
| 2024 | 7 | 5 |
| 2025 | 5 | 6 |
| 2026 | 4 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Infusion pump having power-saving modes246US 5,791,880 ASabratek Corporation · 1998
- Infusion pump having power-saving modes212US 5,628,619 ASabratek Corporation · 1997
- Apparatus and method for regulating a pressure in a chamber203US 5,944,049 AAPPLIED Materials.Inc. · 1999
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