F04B 2201/0806
Resonant frequency
F04B2201/0806 (Resonant frequency) appears on 5 US grants and 10 published applications in this corpus.
Search patents in F04B- Granted patents
- 5
- Published applications
- 10
- Assignees
- 11
- Inventors
- 27
- Latest grant
- 12 Sep 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 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 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Negative pressure wound therapy device with silent piezoelectric pump12 Sep 2023US 11,754,063 B2KCI Licensing, Inc.
- Hermetic compressor for positive displacement5 Jul 2022US 11,378,311 B2Whirlpool S. A.
- Apparatus for controlling a linear compressor26 Jan 2016US 9,243,620 B2LG Electronics Inc.
- Piezoelectric microblower1 Apr 2014US 8,684,707 B2Murata Manufacturing Co., Ltd.
- Apparatus and method of determining compressor structural resonant frequency27 Jun 1989US 4,842,491 AAmerican Standard Inc.
- Negative pressure wound therapy device with silent piezoelectric pump4 Mar 2021US 2021/0060216 A1KCI Licensing, Inc.
- Linear compressor and methods of setpoint control19 Nov 2020US 2020/0362842 A1Haier US Appliance Solutions, Inc.
- Hermetic Compressor for Positive Displacement22 Nov 2018US 2018/0335233 A1Whirlpool Corporation
- Piezoelectric microblower24 Mar 2011US 2011/0070109 A1Murata Manufacturing Co., Ltd.
- Linear Compressor19 Feb 2009US 2009/0047154 A1LG Electronics Inc.
Most cited
By later US patents