H01F 27/02
Casings
H01F27/02 (Casings) appears on 2,364 US grants and 2,744 published applications in this corpus.
Search patents in H01F- Granted patents
- 2,364
- Published applications
- 2,744
- Assignees
- 963
- Inventors
- 5,458
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 13 | 0 |
| 1978 | 12 | 0 |
| 1979 | 15 | 0 |
| 1980 | 13 | 0 |
| 1981 | 12 | 0 |
| 1982 | 10 | 0 |
| 1983 | 8 | 0 |
| 1984 | 13 | 0 |
| 1985 | 9 | 0 |
| 1986 | 17 | 0 |
| 1987 | 13 | 0 |
| 1988 | 8 | 0 |
| 1989 | 26 | 0 |
| 1990 | 19 | 0 |
| 1991 | 9 | 0 |
| 1992 | 12 | 0 |
| 1993 | 16 | 0 |
| 1994 | 14 | 0 |
| 1995 | 11 | 0 |
| 1996 | 15 | 0 |
| 1997 | 13 | 0 |
| 1998 | 17 | 0 |
| 1999 | 19 | 0 |
| 2000 | 22 | 0 |
| 2001 | 23 | 5 |
| 2002 | 38 | 49 |
| 2003 | 27 | 34 |
| 2004 | 31 | 49 |
| 2005 | 48 | 56 |
| 2006 | 51 | 54 |
| 2007 | 39 | 68 |
| 2008 | 34 | 58 |
| 2009 | 29 | 57 |
| 2010 | 53 | 67 |
| 2011 | 57 | 38 |
| 2012 | 46 | 64 |
| 2013 | 45 | 78 |
| 2014 | 54 | 105 |
| 2015 | 60 | 118 |
| 2016 | 88 | 130 |
| 2017 | 105 | 139 |
| 2018 | 97 | 171 |
| 2019 | 135 | 183 |
| 2020 | 124 | 189 |
| 2021 | 127 | 189 |
| 2022 | 155 | 189 |
| 2023 | 149 | 182 |
| 2024 | 149 | 198 |
| 2025 | 140 | 156 |
| 2026 | 108 | 118 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Inductance element and inductance element fabrication method6 Oct 2026US 12,755,886 B2Lapis Semiconductor Co., Ltd.
- Integral transformer junction module6 Oct 2026US 12,755,887 B2
- Electric transformer with an increased total leakage impedance29 Sep 2026US 12,749,616 B2Exxelia
- Coil member and camera module comprising same15 Sep 2026US 12,738,405 B2LG Innotek Co., Ltd.
- Coil component15 Sep 2026US 12,738,409 B2Samsung Electro-Mechanics Co., Ltd.
- Electronic component8 Oct 2026US 2026/0311928 A1TDK Corporation
- Magnetic shunt for toroidal magnetic assembly8 Oct 2026US 2026/0311929 A1Tesla, Inc.
- Medical Wireless Charging Device With Ferrite Stack Centered And Directly Contacted To A Charging Coil8 Oct 2026US 2026/0312429 A1Greatbatch Ltd.
- Transformer core insulating cover1 Oct 2026US 2026/0302035 A1ABB Schweiz AG
- Coil component1 Oct 2026US 2026/0302036 A1TDK Corporation
Most cited
By later US patents
- Switching electrical power supply utilizing miniature inductors integrally in a PCB210US 4,622,627 ATheta-J Corporation · 1986
- Portable self powered line mountable device for measuring and transmitting ambient temperature191US 9,380,857 B22016
- Single unit integrated transformer assembly186US 6,483,203 B13Com Corporation · 2002
- Character count determination for a digital image125US 9,286,514 B1United Services Automobile Association (USAA) · 2016
- System and method for cryogenic cooling of electromagnetic induction filter121US 10,015,908 B2The Boeing Company · 2018