H02P 1/426
By using a specially adapted frequency converter
Official title: {by using a specially adapted frequency converter}
H02P1/426 (By using a specially adapted frequency converter) appears on 25 US grants and 22 published applications in this corpus.
Search patents in H02P- Granted patents
- 25
- Published applications
- 22
- Assignees
- 21
- Inventors
- 47
- Latest grant
- 5 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 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 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 2 | 2 |
| 2014 | 1 | 2 |
| 2015 | 0 | 1 |
| 2016 | 2 | 1 |
| 2017 | 1 | 2 |
| 2018 | 3 | 2 |
| 2019 | 1 | 3 |
| 2020 | 0 | 0 |
| 2021 | 3 | 2 |
| 2022 | 1 | 2 |
| 2023 | 3 | 1 |
| 2024 | 1 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
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Most cited
By later US patents
- Two step power output motor and associated HVAC systems and methods71US 6,172,476 B2Bristol Compressors, Inc. · 2001
- Motor starting circuit43US 4,801,858 APT Components, Inc. · 1989
- H-Switch start-up control and frequency converter for variable speed AC motor21US 4,459,535 AEaton Corporation · 1984
- Hybrid drive circuit for variable speed induction motor15US 9,800,188 B2Regal Beloit America, Inc. · 2017
- Soft start system for motors utilizing variable frequency drive and autotransformer12US 7,508,160 B1Converteam Ltd · 2009