H01F 27/23
Corrosion protection
H01F27/23 (Corrosion protection) appears on 30 US grants and 43 published applications in this corpus.
Search patents in H01F- Granted patents
- 30
- Published applications
- 43
- Assignees
- 25
- Inventors
- 89
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 2 | 7 |
| 2012 | 0 | 0 |
| 2013 | 5 | 4 |
| 2014 | 3 | 0 |
| 2015 | 0 | 4 |
| 2016 | 2 | 1 |
| 2017 | 1 | 5 |
| 2018 | 2 | 2 |
| 2019 | 3 | 2 |
| 2020 | 3 | 1 |
| 2021 | 1 | 2 |
| 2022 | 1 | 1 |
| 2023 | 2 | 2 |
| 2024 | 0 | 3 |
| 2025 | 1 | 0 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Reactor, converter, and power conversion device11 Aug 2026US 12,706,239 B2Autonetworks Technologies, Ltd.
- Inductor component and mounting structure of inductor component28 Apr 2026US 12,614,660 B2Murata Manufacturing Co., Ltd.
- Electronic component20 May 2025US 12,308,174 B2Murata Manufacturing Co., Ltd.
- Energy harvest split core design elements for ease of installation, high performance, and long term reliability17 Oct 2023US 11,789,042 B2Sentient Technology Holdings, LLC
- Transformer for fastening to a mast of an energy distribution network21 Feb 2023US 11,587,714 B2Siemens Energy Global GmbH & Co. KG
- Coil component27 Aug 2026US 2026/0253779 A1TDK Corporation
- Inductor26 Sep 2024US 2024/0321503 A1TDK Corporation
- Expansion valve coil structure and preparing method thereof, and expansion valve19 Sep 2024US 2024/0309962 A1Zhejiang Dunan Artificial Environment Co., Ltd.
- Electronic component25 Jan 2024US 2024/0029957 A1Murata Manufacturing Co., Ltd.
- Energy harvest split core design elements for ease of installation, high performance, and long term reliability28 Dec 2023US 2023/0417801 A1Sentient Technology Holdings, LLC
Most cited
By later US patents
- Transformer door with corrosion resistant bottom strip20US 5,783,775 ACooper Industries, Inc. · 1998
- Energy harvest split core design elements for ease of installation, high performance, and long term reliability19US 9,229,036 B2Sentient Energy, Inc. · 2016
- Pressure compensator16US 8,439,080 B2ABB Technology AG · 2013
- Electrical machine with dual insulated coil assembly11US 8,754,562 B2Clean Current Power Systems Incorporated · 2014
- Pressure compensator10US 8,549,924 B2ABB Technology AG · 2013