G01R 1/28
Provision in measuring instruments for reference values
Official title: Provision in measuring instruments for reference values, e.g. standard voltage, standard waveform
G01R1/28 (Provision in measuring instruments for reference values) appears on 65 US grants and 57 published applications in this corpus.
Search patents in G01R- Granted patents
- 65
- Published applications
- 57
- Assignees
- 68
- Inventors
- 177
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 2 | 1 |
| 2009 | 1 | 0 |
| 2010 | 2 | 3 |
| 2011 | 2 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 4 |
| 2014 | 3 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 2 |
| 2017 | 2 | 0 |
| 2018 | 1 | 3 |
| 2019 | 4 | 4 |
| 2020 | 3 | 5 |
| 2021 | 6 | 4 |
| 2022 | 4 | 3 |
| 2023 | 2 | 6 |
| 2024 | 1 | 6 |
| 2025 | 6 | 6 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electric fencing wire tester2 Jun 2026US 12,644,906 B2Forcefield Active Technology Limited
- Sensing electronic device21 Apr 2026US 12,607,652 B2Innolux Corporation
- Sample inspection apparatus10 Feb 2026US 12,546,805 B2Hitachi High-Tech Corporation
- Depth detector systems13 Jan 2026US 12,523,679 B2Cascade Corporation
- Systems and methods for calibrating a wireless harness automated measurement system16 Dec 2025US 12,498,399 B2Lockheed Martin Corporation
- Device for measuring the electrical resistance of an element17 Sep 2026US 2026/0276687 A1Ateq
- Inspection device, contact status determining device, and contact status determining method23 Jul 2026US 2026/0211049 A1Hioki E. E. Corporation
- Power supply probe with polarity safeguard5 Mar 2026US 2026/0063671 A1Innova Electronics Corporation
- Noise and jitter compensation and signal processing of equivalent-time waveforms29 Jan 2026US 2026/0029451 A1Keysight Technologies, Inc.
- Linear voltage regulator with isolated supply current20 Nov 2025US 2025/0355454 A1Medtronic MiniMed, Inc.
Most cited
By later US patents
- Apparatus and methods for calibrated work function measurements32US 5,136,247 A1992
- Touch controlled voltage-divider device29US 3,968,467 A1976
- Current sensing circuit for power supply with series control transistor28US 4,278,930 AGTE Automatic Electric Laboratories Incorporated · 1981
- Supply voltage independent bandgap based reference generator circuit for SOI/bulk CMOS technologies23US 5,811,993 AInternational Business Machines Corporation · 1998
- Adaptive digital filter for improved measurement accuracy in an electronic instrument19US 5,698,984 AFluke Corporation · 1997