H01F 41/12
Insulating of windings
Official title: Insulating of windings ({impregnating or encapsulating of transformers H01F41/005} ; of conductors in general H01B13/06)
H01F41/12 (Insulating of windings) appears on 712 US grants and 810 published applications in this corpus.
Search patents in H01F- Granted patents
- 712
- Published applications
- 810
- Assignees
- 364
- Inventors
- 1,870
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 5 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 2 | 0 |
| 1983 | 8 | 0 |
| 1984 | 8 | 0 |
| 1985 | 10 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 7 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 13 | 0 |
| 2001 | 6 | 1 |
| 2002 | 15 | 20 |
| 2003 | 8 | 9 |
| 2004 | 9 | 16 |
| 2005 | 11 | 8 |
| 2006 | 9 | 9 |
| 2007 | 7 | 16 |
| 2008 | 5 | 18 |
| 2009 | 8 | 15 |
| 2010 | 10 | 12 |
| 2011 | 10 | 15 |
| 2012 | 10 | 16 |
| 2013 | 8 | 16 |
| 2014 | 15 | 25 |
| 2015 | 17 | 19 |
| 2016 | 15 | 20 |
| 2017 | 18 | 35 |
| 2018 | 21 | 51 |
| 2019 | 33 | 98 |
| 2020 | 39 | 79 |
| 2021 | 46 | 69 |
| 2022 | 63 | 65 |
| 2023 | 72 | 53 |
| 2024 | 49 | 52 |
| 2025 | 43 | 40 |
| 2026 | 35 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multilayer-type coil component6 Oct 2026US 12,755,894 B2Murata Manufacturing Co., Ltd.
- Coil device and method of manufacturing coil device22 Sep 2026US 12,744,154 B2Mitsubishi Electric Corporation
- Transformer for LDC of electric vehicle1 Sep 2026US 12,725,731 B2Atum Co., Ltd.
- Inductor component25 Aug 2026US 12,718,982 B2Murata Manufacturing Co., Ltd.
- Flat coil carrier18 Aug 2026US 12,712,117 B2Mahle International GmbH
- Coil and Method of Manufacturing Coil1 Oct 2026US 2026/0302055 A1Hyundai Motor Company
- Vinyl ester resin composition and method for producing electrical appliance insulator using same24 Sep 2026US 2026/0290667 A1Resonac Corporation
- Coil component, method for manufacturing coil component, and electronic/electric device24 Sep 2026US 2026/0290676 A1Delta Electronics (Japan), Inc.
- Inductor packages having coil with wedge electrical bonds for increased coil core area, and related fabrication methods24 Sep 2026US 2026/0290678 A1QUALCOMM Incorporated
- Internally-cooled actuator coil24 Sep 2026US 2026/0290679 A1ASML Netherlands B. V.
Most cited
By later US patents
- Character count determination for a digital image125US 9,286,514 B1United Services Automobile Association (USAA) · 2016
- Character count determination for a digital image111US 9,904,848 B1United Services Automobile Association (USAA) · 2018
- 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
- Excitation coil for an electrodeless high intensity discharge lamp93US 5,039,903 AGeneral Electric Company · 1991
- Wire wound electronic component84US 6,198,373 B1Taiyo Yuden Co., Ltd. · 2001