G01R 19/14
Indicating direction of current
Official title: Indicating direction of current; Indicating polarity of voltage
G01R19/14 (Indicating direction of current) appears on 165 US grants and 118 published applications in this corpus.
Search patents in G01R- Granted patents
- 165
- Published applications
- 118
- Assignees
- 127
- Inventors
- 317
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 8 | 0 |
| 1978 | 1 | 0 |
| 1979 | 5 | 0 |
| 1980 | 4 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 8 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 4 |
| 2004 | 3 | 3 |
| 2005 | 2 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 3 |
| 2009 | 0 | 4 |
| 2010 | 1 | 3 |
| 2011 | 3 | 2 |
| 2012 | 3 | 3 |
| 2013 | 2 | 2 |
| 2014 | 3 | 9 |
| 2015 | 3 | 8 |
| 2016 | 9 | 4 |
| 2017 | 5 | 8 |
| 2018 | 7 | 10 |
| 2019 | 7 | 9 |
| 2020 | 12 | 6 |
| 2021 | 9 | 10 |
| 2022 | 7 | 11 |
| 2023 | 7 | 5 |
| 2024 | 7 | 3 |
| 2025 | 4 | 6 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-path current difference detection device14 Jul 2026US 12,681,055 B2Delta Electronics, Inc.
- Semiconductor device12 May 2026US 12,627,293 B2Rohm Co., Ltd.
- Power semiconductor circuit and method for determining a temperature of a power semiconductor component17 Mar 2026US 12,578,235 B2Infineon Technologies AG
- Safety module for an inverter of a hybrid vehicle16 Dec 2025US 12,499,720 B2Schaeffler Technologies AG & Co. KG
- Bidirectional charging detection circuit and data cable25 Nov 2025US 12,483,052 B2Dongguan XCOSO Electronic Tech Co., Ltd
- Artificial nociceptor11 Jun 2026US 2026/0160617 A1SK hynix Inc.
- Methods and apparatus to implement current sensors12 Mar 2026US 2026/0074536 A1Texas Instruments Incorporated
- Combiner device, photovoltaic system and fault detection method9 Oct 2025US 2025/0317104 A1Sungrow Power Supply Co., Ltd.
- Band4 Sep 2025US 2025/0277684 A1
- Source-agnostic time-domain directional relay for power grid4 Sep 2025US 2025/0277826 A1Clemson University
Most cited
By later US patents
- Capacitor discharge ignition testing apparatus employing visual spark gap indicator188US 3,979,664 ABrunswick Corporation · 1976
- Circuit condition monitoring system having integral test point62US 4,794,331 A1988
- Fault indicator with combined trip and reset winding51US 4,438,403 A1984
- Hand held testing device for indicating an electric test voltage37US 4,301,407 ASiemens Aktiengesellschaft · 1981
- Charging circuit and method for preventing charging power supply from reversely connecting37US 9,240,697 B2Huizhou Kimree Technology Co., Ltd. Shenzhen Branch · 2016