G01R 31/44
Testing lamps
G01R31/44 (Testing lamps) appears on 488 US grants and 506 published applications in this corpus.
Search patents in G01R- Granted patents
- 488
- Published applications
- 506
- Assignees
- 314
- Inventors
- 1,046
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 1 |
| 2002 | 3 | 6 |
| 2003 | 8 | 8 |
| 2004 | 6 | 1 |
| 2005 | 1 | 2 |
| 2006 | 7 | 6 |
| 2007 | 1 | 8 |
| 2008 | 2 | 8 |
| 2009 | 4 | 9 |
| 2010 | 4 | 3 |
| 2011 | 6 | 6 |
| 2012 | 3 | 9 |
| 2013 | 6 | 13 |
| 2014 | 11 | 32 |
| 2015 | 11 | 36 |
| 2016 | 24 | 45 |
| 2017 | 41 | 87 |
| 2018 | 70 | 80 |
| 2019 | 90 | 50 |
| 2020 | 56 | 20 |
| 2021 | 28 | 22 |
| 2022 | 19 | 7 |
| 2023 | 12 | 14 |
| 2024 | 15 | 15 |
| 2025 | 8 | 12 |
| 2026 | 11 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Illumination device and method for calibrating an illumination device over changes in temperature, drive current, and time6 Oct 2026US 12,757,304 B2Lutron Technology Company LLC
- Self-test procedure for a control device22 Sep 2026US 12,745,334 B2Lutron Technology Company LLC
- Lighting device with fault detection and self- locking control function22 Sep 2026US 12,745,335 B2Xiamen PVTECH Co., Ltd.
- Adapter for selecting lamp function in a truck trailer8 Sep 2026US 12,728,680 B2Grote Industries, Inc.
- Testing method for headlamps, and testing device11 Aug 2026US 12,703,300 B2Hella GmbH & Co. KGaA
- Systems and methods for determining when to trigger an abort process during semiconductor fabrication processing24 Sep 2026US 2026/0287676 A1ASM IP Holding B. V.
- Emergency lighting device having an emergency test function2 Jul 2026US 2026/0186074 A1Xiamen PVTECH Co., Ltd.
- System and device for portable electrical testing and control12 Feb 2026US 2026/0043872 A1RAM Built, LLC
- Lamp manufacturing process5 Feb 2026US 2026/0036646 A1Llink Technologies, Inc.
- Led driving module22 Jan 2026US 2026/0025892 A1Seoul Viosys Co., Ltd.
Most cited
By later US patents
- Passive electrical coupling device and methods for use therewith323US 10,224,981 B2AT&T Intellectual Property I, L. P. · 2019
- Communication system for a power distribution line176US 5,581,229 AHunt Technologies, Inc. · 1996
- Output cable measurement166US 10,114,061 B2Kohler Co. · 2018
- Automotive electrical system configuration using a two bus structure94US 7,075,273 B2Motorola, Inc. · 2006
- System and method for streetlight monitoring diagnostics79US 8,140,276 B2ABL IP Holding LLC · 2012