E21C 35/1837
Characterised by the shape
Official title: {characterised by the shape}
E21C35/1837 (Characterised by the shape) appears on 184 US grants and 129 published applications in this corpus.
Search patents in E21C- Granted patents
- 184
- Published applications
- 129
- Assignees
- 64
- Inventors
- 216
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 7 | 0 |
| 1991 | 1 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 1 |
| 2003 | 0 | 2 |
| 2004 | 1 | 2 |
| 2005 | 2 | 1 |
| 2006 | 1 | 1 |
| 2007 | 1 | 4 |
| 2008 | 6 | 10 |
| 2009 | 0 | 8 |
| 2010 | 3 | 4 |
| 2011 | 8 | 4 |
| 2012 | 4 | 2 |
| 2013 | 2 | 5 |
| 2014 | 2 | 10 |
| 2015 | 5 | 8 |
| 2016 | 5 | 4 |
| 2017 | 5 | 7 |
| 2018 | 6 | 4 |
| 2019 | 13 | 12 |
| 2020 | 9 | 7 |
| 2021 | 9 | 12 |
| 2022 | 9 | 8 |
| 2023 | 9 | 6 |
| 2024 | 5 | 0 |
| 2025 | 4 | 3 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Wear protection cap and a bit holder arrangement2 Jun 2026US 12,644,384 B2Sandvik Mining and Construction Oy
- Retention system for attaching tool bits to a blade assembly14 Apr 2026US 12,601,159 B2Caterpillar Inc.
- Rebuildable hard surface cutting tip for mining bit14 Apr 2026US 12,601,259 B2Bit Service Company LTD
- Rotatable cutting tool with cutting insert and bolster24 Feb 2026US 12,560,085 B2Kennametal Inc.
- Adapter board having a tool bit attachment portion11 Nov 2025US 12,467,226 B2Caterpillar Inc.
- Pick tool13 Aug 2026US 2026/0235028 A1Element Six Limited
- Rebuildable hard surface cutting tip for mining bit25 Jun 2026US 2026/0176967 A1Bit Service Company LTD
- Tapered bushing for bit removal19 Feb 2026US 2026/0049459 A1Caterpillar Inc.
- Bolsters for degradation picks1 Jan 2026US 2026/0002443 A1Schlumberger Technology Corporation
- Rebuildable hard surface cutting tip for mining bit17 Apr 2025US 2025/0122803 A1Bit Service Company LTD
Most cited
By later US patents
- Tool comprised of a holder body and a hard insert and method of using same177US 5,417,475 ASandvik AB · 1995
- Tool for a mine working machine comprising a diamond-charged abrasive component165US 4,944,559 ASociete Industrielle de Combustible Nucleaire · 1990
- Pick for disintegrating natural and man-made materials158US 6,733,087 B22004
- Point attack bit156US 6,019,434 AFansteel Inc. · 2000
- Diamond coated cutting tool insert and method of making same152US 5,837,071 AMegadiamond, Inc. · 1998