H02H 7/055
For tapped transformers or tap-changing means thereof
Official title: for tapped transformers or tap-changing means thereof
H02H7/055 (For tapped transformers or tap-changing means thereof) appears on 25 US grants and 18 published applications in this corpus.
Search patents in H02H- Granted patents
- 25
- Published applications
- 18
- Assignees
- 19
- Inventors
- 51
- Latest grant
- 11 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 2 |
| 2015 | 2 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 4 | 6 |
| 2020 | 3 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Submarine cable system and a switching method thereof11 Feb 2025US 12,224,573 B2Saudi Arabian Oil Company
- Power electronic tap changer module for transformer8 Dec 2020US 10,861,642 B2ABB Schweiz AG
- Monitoring tap changer switching11 Aug 2020US 10,742,019 B2ABB Power Grids Switzerland AG
- Inductive element protection in a power supply system26 May 2020US 10,666,088 B2ABB Schweiz AG
- Monitoring a transformer comprising a tap changer12 Nov 2019US 10,473,707 B2ABB Schweiz AG
- Submarine cable system and a switching method thereof8 May 2025US 2025/0149882 A1Saudi Arabian Oil Company
- Monitoring a transformer comprising a tap changer3 Apr 2025US 2025/0110190 A1Hitachi Energy Ltd
- Submarine cable system and a switching method thereof2 May 2024US 2024/0146051 A1Saudi Arabian Oil Company
- Inductive Element Protection In A Power Supply System28 Nov 2019US 2019/0363572 A1ABB Schweiz AG
- Monitoring Tap Changer Switching19 Sep 2019US 2019/0288503 A1ABB Schweiz AG
Most cited
By later US patents
- Method for determining wear and other characteristics of electrodes in high voltage equipment118US 6,448,758 B1General Electric Company · 2002
- Apparatus for protecting vacuum interrupter type on-line tap changer39US 4,388,664 AFuji Electric Co., Ltd. · 1983
- Tap switching protection circuit24US 4,860,145 AOneac Corporation · 1989
- Method for tapping a high voltage transmission line and substation using the same24US 7,193,338 B22007
- Arcless tap changer utilizing static switching15US 4,301,489 ASiemens-Allis, Inc. · 1981