Description
MINING OR QUARRYING
E21C
Technology
Sub-Class
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- 9 711 US PATENTS IN FORCE
- 158 US APPLICATIONS PENDING
- 1051 Total Patent Owners
- 3372 TOTAL INVENTORS
Subclasses
| Subclass | Title |
|---|---|
| 25/00 | Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) |
| 25/02 | Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more percussive tools moved through the seam |
| 25/04 | Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more percussive tools moved through the seam Cutting crowns or other tools (percussion drill bits E21B 10/36) |
| 25/06 | Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate |
| 25/08 | Cutting machines, i.e. for making slits approximately parallel or perpendicular to the seam (dislodging machines with slitting means E21C 27/02, E21C 27/1, E21C 27/18) Machines slitting solely by one or more cutting rods or cutting drums which rotate, move through the seam, and may or may not reciprocate Mountings for the rods or drums |
Recent Patents
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 9,120,243 | Tool insert | Jul 26, 12 | Sep 01, 15 | BOUNDARY EQUIPMENT CO. LTD. |
| 9,121,146 | Determining milled volume or milled area of a milled surface | Oct 08, 12 | Sep 01, 15 | WIRTGEN GMBH |
| 9,115,581 | System and method of vector drive control for a mining machine | Jul 09, 14 | Aug 25, 15 | HARNISCHFEGER TECHNOLOGIES, INC. |
| 9,109,444 | Tool | Jan 11, 12 | Aug 18, 15 | WIRTGEN GMBH |
| 9,103,208 | Cutting bit with hard cutting tip centering and braze joint control feature | Jun 12, 12 | Aug 11, 15 | KENNAMETAL INC. |
| 9,103,209 | System for controlling speed of travel in a longwall shearer | Mar 25, 14 | Aug 11, 15 | CATERPILLAR GLOBAL MINING EUROPE GMBH |
Recent Publications
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2015/0240,634 | Bit Holder Shank and Differential Interference Between the Shank Distal Portion and the Bit Holder Block Bore | Feb 23, 15 | Aug 27, 15 | THE SOLLAMI COMPANY |
| 2015/0240,635 | PICK TOOL HAVING A SUPER-HARD PLANAR STRIKE SURFACE | Sep 25, 13 | Aug 27, 15 | ELEMENT SIX GMBH, |
| 2015/0233,184 | SYSTEM FOR REGULATION AND CONTROL OF WATER PRESSURE AND FLOW RATE IN A HIGH PRESSURE WATER APPLICATION | Feb 13, 15 | Aug 20, 15 | ALAMO GROUP, INC. |
Top Owners in This Class
Top Owners in This Subclass
Applications Filed in This Class - By Year
Applications Filed in This Subclass - By Year
Patents Issued To Date - By Filing Year
Average Time to Issuance
- 31 Months (last 2 years Issuances)
- 31 Months (last 5 years Issuances)
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