E21C 35/187
With arrangement of fluid-spraying nozzles
Official title: with arrangement of fluid-spraying nozzles (supply of fluid to the nozzles E21C35/22)
E21C35/187 (With arrangement of fluid-spraying nozzles) appears on 82 US grants and 21 published applications in this corpus.
Search patents in E21C- Granted patents
- 82
- Published applications
- 21
- Assignees
- 41
- Inventors
- 93
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 8 | 0 |
| 1985 | 9 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 4 |
| 2012 | 2 | 2 |
| 2013 | 3 | 1 |
| 2014 | 1 | 2 |
| 2015 | 2 | 0 |
| 2016 | 0 | 2 |
| 2017 | 2 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 1 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tunnel boring machine equipped with high-pressure water jet cutting system and combined tunneling method27 Jan 2026US 12,535,004 B2Shandong University
- Hard rock roadway and tunnel boring machine with actively rotating hobs14 Dec 2021US 11,199,092 B2China University of Mining and Technology
- Cutter pick assembly with water spray assembly10 Nov 2020US 10,830,042 B2Minnovation Limited
- Mineral winning pick, pick holder, and combination28 Jul 2020US 10,724,369 B2Esco Group LLC
- Cutting bit assembly21 Aug 2018US 10,053,983 B2Joy Global Underground Mining LLC
- Tunnel boring machine equipped with high-pressure water jet cutting system and combined tunneling method16 Oct 2025US 2025/0320818 A1Shandong University
- Hard rock roadway and tunnel boring machine with actively rotating hobs29 Jul 2021US 2021/0231013 A1China University of Mining and Technology
- Cutter pick assembly with water spray assembly2 Jul 2020US 2020/0208516 A1Minnovation Limited
- Cutting bit assembly4 Jan 2018US 2018/0003052 A1Joy MM Delaware, Inc.
- Block with coolant delivery24 Nov 2016US 2016/0341040 A1Kennametal Inc.
Most cited
By later US patents
- Tip and mineral cutter pick109US 4,765,687 AInnovation LLC · 1988
- Rotatable cutting bit for a mining machine104US 4,765,686 AGTE Valenite Corporation · 1988
- Frustum cutting bit arrangement73US 6,102,486 ABriese Industrial Technologies, Inc. · 2000
- Cutting tool and method of manufacturing such a tool68US 4,453,775 APadley & Venables Limited · 1984
- Excavating head with pick-controlled water supply43US 4,537,448 AVoest-Alpine Aktiengesellschaft · 1985