G01R 31/2812
Checking for open circuits or shorts
Official title: {Checking for open circuits or shorts, e.g. solder bridges; Testing conductivity, resistivity or impedance (of connections G01R31/66)}
G01R31/2812 (Checking for open circuits or shorts) appears on 280 US grants and 286 published applications in this corpus.
Search patents in G01R- Granted patents
- 280
- Published applications
- 286
- Assignees
- 212
- Inventors
- 736
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 1 |
| 2002 | 3 | 10 |
| 2003 | 8 | 13 |
| 2004 | 12 | 4 |
| 2005 | 7 | 7 |
| 2006 | 11 | 9 |
| 2007 | 3 | 8 |
| 2008 | 1 | 11 |
| 2009 | 6 | 8 |
| 2010 | 9 | 6 |
| 2011 | 6 | 8 |
| 2012 | 6 | 8 |
| 2013 | 7 | 5 |
| 2014 | 6 | 12 |
| 2015 | 9 | 15 |
| 2016 | 8 | 8 |
| 2017 | 11 | 10 |
| 2018 | 9 | 12 |
| 2019 | 12 | 22 |
| 2020 | 20 | 25 |
| 2021 | 19 | 16 |
| 2022 | 22 | 15 |
| 2023 | 9 | 19 |
| 2024 | 24 | 10 |
| 2025 | 9 | 16 |
| 2026 | 4 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Testing a circuit board6 Oct 2026US 12,754,230 B2Teradyne, Inc.
- Method and apparatus for monitoring the condition of a power semiconductor module7 Jul 2026US 12,674,833 B2ABB Schweiz AG
- Test and repair of interconnects between chips9 Jun 2026US 12,650,459 B2Intel Corporation
- Force, deflection, resistance, and temperature testing system and method of use10 Mar 2026US 12,571,833 B2Modus Test, LLC
- Pressure test port contained within a body of surgical instrument16 Dec 2025US 12,495,954 B2Intuitive Surgical Operations, Inc.
- Memory devices and memory systems outputting codes24 Sep 2026US 2026/0287654 A1SK hynix Inc.
- Arrangement with a printed circuit board and a circuit for detecting carbonization of the printed circuit board25 Jun 2026US 2026/0181782 A1Hella GmbH & Co. KGaA
- A pressure test port contained within a body of surgical instrument4 Jun 2026US 2026/0151019 A1Intuitive Surgical Operations, Inc.
- Advanced Complex Impedance Matching Capabilities for On–Wafer Antenna Transceiver Measurements7 May 2026US 2026/0126487 A1FormFactor, Inc.
- Device for controlling soldered joints on a board23 Apr 2026US 2026/0110728 A1
Most cited
By later US patents
- Contactless test method and system for testing printed circuit boards78US 5,424,633 AAdvanced Test Technologies Inc. · 1995
- Method of testing electronic devices indicating short-circuit76US 6,771,077 B2Hitachi, Ltd. · 2004
- Apparatus and method for testing the connections between an integrated circuit and a printed circuit board46US 5,818,251 ANational Semiconductor Corporation · 1998
- Method and apparatus for circuit board continuity test, tool for continuity test, and recording medium45US 6,825,673 B1OHT Inc. · 2004
- Pacitive electrode system for detecting open solder joints in printed circuit assemblies37US 5,420,500 AHewlett-Packard Company · 1995