H01F 2038/426
With gap in transformer core
Official title: {with gap in transformer core}
H01F2038/426 (With gap in transformer core) appears on 13 US grants and 6 published applications in this corpus.
Search patents in H01F- Granted patents
- 13
- Published applications
- 6
- Assignees
- 14
- Inventors
- 22
- Latest grant
- 17 Oct 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 2 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Sound wave treatment device17 Oct 2023US 11,786,263 B2Richard Wolf GmbH
- Dual usage of inductor core in power supplies24 Sep 2019US 10,421,480 B2thyssenkrupp AG
- Resonant LLC converter with a multi-leg transformer with gapped center leg19 Feb 2019US 10,211,745 B2Mitsubishi Electric Corporation
- Differential mode and common mode choke22 Aug 2017US 9,741,486 B2Schneider Toshiba Inverter Europe SAS
- Low cost charger transformer12 Jun 2012US 8,198,969 B2Astec International Limited
- Sound wave treatment device10 Jan 2019US 2019/0008535 A1Richard Wolf GmbH
- Resonant llc converter with a multi-leg transformer with gapped center leg.6 Dec 2018US 2018/0350513 A1Mitsubishi Electric Corporation
- Dual usage of inductor core in power supplies19 Jul 2018US 2018/0201300 A1thyssenkrupp AG
- Transformer used for storing and filtering11 Jun 2015US 2015/0162127 A1Hella KGaA Hueck & Co.
- Differential mode and common mode choke25 Sep 2014US 2014/0286068 A1Schneider Toshiba Inverter Europe SAS
Most cited
By later US patents
- Transformer for a flyback type converter54US 4,887,061 ATDK Corporation · 1989
- Flyback transformer having coil arrangement capable of reducing leakage of magnetic flux20US 5,122,947 AVictor Company of Japan, Ltd. · 1992
- Transformer core gapping and lead anchoring arrangement18US 4,238,753 ATRW Inc. · 1980
- High voltage generating circuit12US 4,027,200 ASony Corporation · 1977
- Ferrite core type transformer10US 4,334,206 ASanyo Electric Co., Ltd. · 1982