G01N 27/80
For investigating mechanical hardness
Official title: for investigating mechanical hardness, e.g. by investigating saturation or remanence of ferromagnetic material
G01N27/80 (For investigating mechanical hardness) appears on 47 US grants and 53 published applications in this corpus.
Search patents in G01N- Granted patents
- 47
- Published applications
- 53
- Assignees
- 37
- Inventors
- 118
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 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 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 5 |
| 2011 | 2 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 5 |
| 2014 | 4 | 2 |
| 2015 | 4 | 1 |
| 2016 | 4 | 3 |
| 2017 | 0 | 1 |
| 2018 | 4 | 4 |
| 2019 | 0 | 5 |
| 2020 | 4 | 5 |
| 2021 | 5 | 2 |
| 2022 | 3 | 2 |
| 2023 | 2 | 5 |
| 2024 | 4 | 4 |
| 2025 | 1 | 2 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sensor device and method for characterizing metal chips21 Apr 2026US 12,607,550 B2Inmox GmbH
- Polycrystalline diamond compacts13 May 2025US 12,297,153 B2US Synthetic Corporation
- Mechanical property measuring apparatus, mechanical property measuring method, substance manufacturing equipment, substance management method, and substance manufacturing method24 Sep 2024US 12,099,033 B2Jfe Steel Corporation
- Mechanical property measuring apparatus, mechanical property measuring method, substance manufacturing equipment, substance management method, and substance manufacturing method17 Sep 2024US 12,092,609 B2Jfe Steel Corporation
- Method for nondestructive assessment of steel28 May 2024US 11,994,493 B2Sintokogio, Ltd.
- Polycrystalline diamond compacts9 Oct 2025US 2025/0313514 A1US Synthetic Corporation
- External magnetization system using multiple solenoid modules with halbach array and operation method therefor24 Apr 2025US 2025/0132081 A1Advanced Institute of Convergence Technology
- Polycrystalline diamond compact12 Dec 2024US 2024/0410232 A1US Synthetic Corporation
- Sensor device and method for characterizing metal chips19 Sep 2024US 2024/0310267 A1Inmox GmbH
- Device for in-line monitoring the room temperature microstructure variations8 Aug 2024US 2024/0264118 A1NV Bekaert SA
Most cited
By later US patents
- Rotary drill bit including polycrystalline diamond cutting elements320US 7,866,418 B2US Synthetic Corporation · 2011
- Method of testing for and preventing the possibility of cracking, spalling or like defects in rolling mill rolls by determining the rate of change in hardness34US 3,939,404 ADominion Foundries and Steel, Limited · 1976
- Method of fabricating polycrystalline diamond and a polycrystalline diamond compact18US 8,020,645 B2US Synthetic Corporation · 2011
- Polycrystalline diamond17US 8,158,258 B2US Synthetic Corporation · 2012
- Polycrystalline diamond compact12US 9,459,236 B2US Synthetic Corporation · 2016