G01R 31/304
Of printed or hybrid circuits
Official title: of printed or hybrid circuits (G01R31/305 - G01R31/315 take precedence)
G01R31/304 (Of printed or hybrid circuits) appears on 69 US grants and 37 published applications in this corpus.
Search patents in G01R- Granted patents
- 69
- Published applications
- 37
- Assignees
- 52
- Inventors
- 173
- Latest grant
- 26 Sep 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 3 |
| 2002 | 5 | 3 |
| 2003 | 1 | 1 |
| 2004 | 4 | 2 |
| 2005 | 2 | 0 |
| 2006 | 5 | 4 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 4 | 2 |
| 2010 | 3 | 3 |
| 2011 | 1 | 3 |
| 2012 | 1 | 0 |
| 2013 | 2 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 3 |
| 2019 | 1 | 1 |
| 2020 | 2 | 2 |
| 2021 | 1 | 3 |
| 2022 | 3 | 2 |
| 2023 | 3 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Removable contactless probe26 Sep 2023US 11,768,225 B2International Business Machines Corporation
- Method for identifying PCB core-layer properties9 May 2023US 11,644,501 B2International Business Machines Corporation
- Capacitance detection area sensor and conductive pattern sensing apparatus having capacitance detection area sensor31 Jan 2023US 11,567,114 B2OHT Inc.
- Printed circuit board assembly for aircraft engine, and method monitoring same15 Nov 2022US 11,500,011 B2Pratt & Whitney Canada Corp.
- Method for detecting defects in ultra-high resolution panels17 May 2022US 11,335,222 B2
- Removable contactless probe29 Dec 2022US 2022/0413012 A1International Business Machines Corporation
- Method for identifying pcb core-layer properties24 Mar 2022US 2022/0091181 A1International Business Machines Corporation
- Printed circuit board assembly for aircraft engine, and method of monitoring same4 Nov 2021US 2021/0341530 A1Pratt & Whitney Canada Corp.
- Capacitance detection area sensor and conductive pattern sensing apparatus having capacitance detection area sensor23 Sep 2021US 2021/0293866 A1OHT Inc.
- System and method of production testing of impedance of radio frequency circuit incorporated on printed circuit board20 May 2021US 2021/0148973 A1Silicon Laboratories Inc.
Most cited
By later US patents
- Automated laminography system for inspection of electronics108US 4,926,452 AFour PI Systems Corporation · 1990
- Method and apparatus for performing automated circuit board solder quality inspections92US 4,809,308 AIRT Corporation · 1989
- Learning method and apparatus for detecting and controlling solder defects86US 5,621,811 AHewlett-Packard Company · 1997
- Automated laminography system for inspection of electronics83US 5,081,656 AFour PI Systems Corporation · 1992
- Automated laminography system for inspection of electronics57US 5,097,492 AFour PI Systems Corporation · 1992