H01F 2027/329
Insulation with semiconducting layer
Official title: {Insulation with semiconducting layer, e.g. to reduce corona effect}
H01F2027/329 (Insulation with semiconducting layer) appears on 36 US grants and 59 published applications in this corpus.
Search patents in H01F- Granted patents
- 36
- Published applications
- 59
- Assignees
- 29
- Inventors
- 158
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 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 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 2 |
| 2002 | 2 | 13 |
| 2003 | 0 | 1 |
| 2004 | 3 | 1 |
| 2005 | 6 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 3 |
| 2018 | 0 | 2 |
| 2019 | 0 | 2 |
| 2020 | 2 | 3 |
| 2021 | 5 | 8 |
| 2022 | 1 | 5 |
| 2023 | 6 | 4 |
| 2024 | 2 | 7 |
| 2025 | 4 | 5 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Isolation transformer and power converter25 Aug 2026US 12,718,981 B2Huawei Technologies Co., Ltd.
- Insulation device and electrical device having the same23 Dec 2025US 12,505,952 B2Delta Electronics (Shanghai) Co., Ltd.
- Transformer and transformer machining process5 Aug 2025US 12,381,034 B2Sungrow Power Supply Co., Ltd.
- Transformer cooling system and transformer installation20 May 2025US 12,308,159 B2Hitachi Energy Ltd
- Transformer apparatus4 Feb 2025US 12,217,904 B2Solaredge Technologies Ltd.
- Signal transmission element14 May 2026US 2026/0135025 A1Mitsubishi Electric Corporation
- Transformer with improved insulation28 Aug 2025US 2025/0273390 A1
- Inductor structure for medium voltage insulation29 May 2025US 2025/0174389 A1Delta Electronics, Inc.
- Transformer Apparatus17 Apr 2025US 2025/0125088 A1Solaredge Technologies Ltd.
- Transformer winding and method for constructing transformer winding13 Mar 2025US 2025/0087412 A1Eaton Intelligent Power Limited
Most cited
By later US patents
- Turbo generator plant with a high voltage electric generator89US 6,936,947 B1ABB AB · 2005
- Semiconductor binding tape and an electrical member wrapped therewith50US 4,091,139 AWestinghouse Electric Corp. · 1978
- Conductor for high-voltage windings and a rotating electric machine comprising a winding including the conductor37US 6,376,775 B1ABB AB · 2002
- Device and method relating to protection of an object against over-currents comprising over-current reduction17US 6,226,163 B1Asea Brown Boveri AG · 2001
- Electromagnetic device12US 6,822,363 B2ABB AB · 2004