H01F 27/266
Fastening or mounting the core on casing or support
Official title: {Fastening or mounting the core on casing or support (on coil H01F27/30)}
H01F27/266 (Fastening or mounting the core on casing or support) appears on 429 US grants and 542 published applications in this corpus.
Search patents in H01F- Granted patents
- 429
- Published applications
- 542
- Assignees
- 242
- Inventors
- 1,188
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 2 |
| 2002 | 9 | 10 |
| 2003 | 7 | 4 |
| 2004 | 6 | 9 |
| 2005 | 10 | 5 |
| 2006 | 2 | 9 |
| 2007 | 9 | 15 |
| 2008 | 6 | 7 |
| 2009 | 7 | 15 |
| 2010 | 10 | 17 |
| 2011 | 9 | 6 |
| 2012 | 8 | 8 |
| 2013 | 7 | 8 |
| 2014 | 10 | 10 |
| 2015 | 6 | 20 |
| 2016 | 10 | 19 |
| 2017 | 16 | 24 |
| 2018 | 13 | 32 |
| 2019 | 18 | 36 |
| 2020 | 37 | 45 |
| 2021 | 13 | 42 |
| 2022 | 30 | 54 |
| 2023 | 33 | 38 |
| 2024 | 39 | 47 |
| 2025 | 34 | 30 |
| 2026 | 17 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Compensation structure for reducing circulating current in window of transformer and transformer comprising compensation structure22 Sep 2026US 12,744,155 B2Siemens Energy Global GmbH & Co. KG
- Transformer15 Sep 2026US 12,738,408 B2Lite-On Technology Corporation
- Multi-phase coupled inductor18 Aug 2026US 12,712,121 B2Chilisin Electronics Corp.
- Coil module and method for producing a coil assembly21 Jul 2026US 12,688,966 B2WüRth Elektronik Eisos GmbH & Co.KG
- Method to integrate micro transformers into printed circuit board for step-down voltages24 Sep 2026US 2026/0292992 A1Cisco Technology, Inc.
- Reactor20 Aug 2026US 2026/0245784 A1Sumitomo Wiring Systems, Ltd.
- Magnetic Device Having Shielding Layer20 Aug 2026US 2026/0245788 A1Cyntec Co., Ltd.
- Integrally formed inductor and its manufacturing method for the same13 Aug 2026US 2026/0237543 A1HONG DANG Technology Co., Ltd.
- Coil device30 Jul 2026US 2026/0221327 A1TDK Corporation
Most cited
By later US patents
- Hybrid integrated circuit planar transformer191US 5,353,001 ABurr-Brown Corporation · 1994
- Inverter transformer172US 5,812,045 AToko, Inc. · 1998
- Transformer assembling method, transformer, transformer-mounted substrate, power supply unit having transformer-mounted substrate, and recording apparatus including power supply unit96US 6,437,673 B1Canon Kabushiki Kaisha · 2002
- Precision inductive devices and methods72US 7,567,163 B2Pulse Engineering, Inc. · 2009
- Securement for transformer core utilized in a transformer power supply module and method to assemble same67US 6,359,542 B1Motorola, Inc. · 2002