Y02E 40/50
Arrangements for eliminating or reducing asymmetry in polyphase networks
Y02E40/50 (Arrangements for eliminating or reducing asymmetry in polyphase networks) appears on 242 US grants and 240 published applications in this corpus.
Search patents in Y02E- Granted patents
- 242
- Published applications
- 240
- Assignees
- 186
- Inventors
- 599
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 2 |
| 2006 | 1 | 1 |
| 2007 | 3 | 2 |
| 2008 | 1 | 0 |
| 2009 | 2 | 4 |
| 2010 | 2 | 4 |
| 2011 | 1 | 6 |
| 2012 | 4 | 17 |
| 2013 | 7 | 25 |
| 2014 | 14 | 18 |
| 2015 | 15 | 23 |
| 2016 | 13 | 22 |
| 2017 | 26 | 16 |
| 2018 | 18 | 13 |
| 2019 | 25 | 13 |
| 2020 | 10 | 16 |
| 2021 | 15 | 18 |
| 2022 | 13 | 9 |
| 2023 | 12 | 15 |
| 2024 | 9 | 5 |
| 2025 | 10 | 5 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Alternating current electrolysis system, and method and device for controlling the same17 Mar 2026US 12,577,694 B2Sungrow Hydrogen Sci. & Tech. Co., Ltd.
- Method for identifying asymmetrical vibrations when operating an electric device connected to a high-voltage grid24 Feb 2026US 12,562,589 B2Siemens Energy Global GmbH & Co. KG
- System level phase unbalancing to improve overall data center sustainability30 Dec 2025US 12,512,672 B2International Business Machines Corporation
- Systems, devices, and methods for intraphase and interphase balancing in module-based cascaded energy systems21 Oct 2025US 12,447,857 B2Tae Technologies, Inc.
- System and method for unbalanced current adjustment from capacity enhancement and split-phase output of distribution transformer7 Oct 2025US 12,438,373 B2Electric Power Research Institute of Yunnan Power Grid Co., Ltd
- Voltage amplitude and phase adjustment apparatus and method, and computer device and storage medium27 Aug 2026US 2026/0254344 A1
- Systems, devices, and methods for intraphase and interphase balancing in module-based cascaded energy systems30 Jul 2026US 2026/0217155 A1Tae Technologies, Inc.
- System level phase unbalancing to improve overall data center sustainability12 Jun 2025US 2025/0192552 A1International Business Machines Corporation
- Phase power supply path switching circuit8 May 2025US 2025/0149968 A1Chicony Power Technology Co., Ltd.
- Split-phase output power adjustment system, adjustment method, and storage medium in low voltage transformer area27 Feb 2025US 2025/0070557 A1Electric Power Research Institute of Yunnan Power Grid Co., Ltd
Most cited
By later US patents
- Apparatus for and method of evenly distributing an electrical load across an n-phase power distribution network73US 6,018,203 ATarget Hi-Tech Electronics Ltd. · 2000
- System and method for coordinated control and utilization of local storage and generation, with a power grid63US 7,612,466 B2VPT Energy Systems · 2009
- Apparatus for and method of evenly distributing an electrical load across a three phase power distribution network53US 5,604,385 ATarget Hi-Tech Electronics Ltd. · 1997
- Load balanced polyphase power distributing system53US 6,628,009 B1The Root Group, Inc. · 2003
- Automatically switched power receptacle44US 5,281,859 AMolex Incorporated · 1994