B23B 2222/28
Details of hard metal, i.e. cemented carbide
B23B2222/28 (Details of hard metal, i.e. cemented carbide) appears on 264 US grants and 244 published applications in this corpus.
Search patents in B23B- Granted patents
- 264
- Published applications
- 244
- Assignees
- 127
- Inventors
- 561
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 7 | 0 |
| 1988 | 3 | 0 |
| 1989 | 2 | 0 |
| 1990 | 4 | 0 |
| 1991 | 7 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 12 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 6 | 4 |
| 2002 | 5 | 3 |
| 2003 | 6 | 11 |
| 2004 | 4 | 11 |
| 2005 | 6 | 14 |
| 2006 | 3 | 8 |
| 2007 | 8 | 5 |
| 2008 | 9 | 9 |
| 2009 | 3 | 6 |
| 2010 | 3 | 5 |
| 2011 | 5 | 7 |
| 2012 | 6 | 4 |
| 2013 | 1 | 5 |
| 2014 | 6 | 9 |
| 2015 | 6 | 12 |
| 2016 | 11 | 22 |
| 2017 | 8 | 17 |
| 2018 | 17 | 9 |
| 2019 | 15 | 20 |
| 2020 | 7 | 14 |
| 2021 | 14 | 5 |
| 2022 | 10 | 4 |
| 2023 | 7 | 11 |
| 2024 | 2 | 9 |
| 2025 | 7 | 10 |
| 2026 | 7 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Insert and cutting tool25 Aug 2026US 12,715,044 B2KYOCERA Corporation
- Cemented carbide and cutting tool18 Aug 2026US 12,709,788 B2Sumitomo Electric Industries, Ltd.
- Cubic boron nitride sintered material and tool10 Mar 2026US 12,571,079 B2Sumitomo Electric Hardmetal Corp.
- Tungsten carbide-based cemented hard material3 Mar 2026US 12,565,696 B2CERATIZIT Luxembourg S.a.r.l.
- Cubic boron nitride sintered material17 Feb 2026US 12,552,719 B2Sumitomo Electric Hardmetal Corp.
- Coated cutting tool23 Jul 2026US 2026/0208271 A1Walter AG
- Coated cutting tool16 Jul 2026US 2026/0199986 A1AB Sandvik Coromant
- Drilling tool, blank for drilling tool, and method for manufacturing blank for drilling tool11 Jun 2026US 2026/0158563 A1Osg Corporation
- Masonry drill head7 May 2026US 2026/0124787 A1Ceratizit Hard Material Solutions S.A R.L.
- Cemented carbide and cutting tool30 Apr 2026US 2026/0115803 A1Sumitomo Electric Industries, Ltd.
Most cited
By later US patents
- Cutting composite formed of cemented carbide substrate and diamond layer481US 5,120,327 ADiamant Boart-Stratabit (USA) Inc. · 1992
- Cutting element having composite formed of cemented carbide substrate and diamond layer and method of making same258US 4,784,023 ADiamant Boart-Stratabit (USA) Inc. · 1988
- Low pressure bonding of PCD bodies and method for drill bits and the like244US 4,943,488 ANorton Company · 1990
- Low pressure bonding of PCD bodies and method236US 5,030,276 ANorton Company · 1991
- Composite polycrystalline cutting element with improved fracture and delamination resistance211US 5,355,969 AUS Synthetic Corporation · 1994