Class E21C : MINING OR QUARRYING
Subclass 25/16: 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 rotating saws, cutting discs, or wheels
| Patent # | Title | Filing Date | Issue Date | Patent Owner |
|---|---|---|---|---|
| 11939868 | Cutting device and support for same | Mar 24, 23 | Mar 26, 24 | Joy Global Underground Mining LLC |
| 11725512 | Method for removing material from a rock wall | May 16, 22 | Aug 15, 23 | Joy Global Underground Mining LLC |
| 11400613 | Self-hammering cutting tool | Mar 02, 20 | Aug 02, 22 | California Institute of Technology |
| 11391148 | Cutting assembly | Mar 21, 19 | Jul 19, 22 | ELEMENT SIX (UK) LIMITED |
| 11391151 | Automatic coal mining machine and fluidized coal mining method | Mar 23, 18 | Jul 19, 22 | CHINA UNIVERSITY OF MINING AND TECHNOLOGY, BEIJING; Shenzhen University; |
| 11371346 | Cutter head for mining machine | Nov 08, 19 | Jun 28, 22 | Joy Global Underground Mining LLC |
| 11339657 | Cutter head for mining machine | Nov 08, 19 | May 24, 22 | Joy Global Underground Mining LLC |
| 11319754 | Rock cutting assembly | Jul 25, 19 | May 03, 22 | Joy Global Underground Mining LLC |
| 11274497 | Rock cutting assembly | Jul 25, 19 | Mar 15, 22 | Joy Global Underground Mining LLC |
| 10876404 | Roller cutter unit for undercutting machine | Nov 10, 16 | Dec 29, 20 | Sandvik Intellectual Property AB |
| 10844713 | Shearing system for longwall mining | Jul 23, 19 | Nov 24, 20 | CATERPILLAR GLOBAL MINING EUROPE GMBH |
| 10738608 | Cutting device and support for same | Aug 18, 17 | Aug 11, 20 | Joy Global Underground Mining LLC |
| 10472961 | Cutter head for mining machine | Sep 15, 16 | Nov 12, 19 | Joy Global Underground Mining LLC |
| 10415383 | Cutter assembly with rolling elements and method of disassembling | Jun 22, 15 | Sep 17, 19 | Sandvik Intellectual Property AB |
| 10316659 | Stabilization system for a mining machine | Apr 04, 18 | Jun 11, 19 | Joy Global Underground Mining LLC |
| 10260340 | Cutter assembly with cutter device and method of assembling | Jun 22, 15 | Apr 16, 19 | Sandvik Intellectual Property |
| 10214360 | Chain conveyor and drive sprocket for same | Aug 04, 17 | Feb 26, 19 | Joy Global Underground Mining LLC |
| 10094216 | Milling depth compensation system and method | Jul 22, 16 | Oct 09, 18 | CATERPILLAR GLOBAL MINING EUROPE GMBH |
| 9951615 | Stabilization system for a mining machine | May 05, 17 | Apr 24, 18 | Joy MM Delaware, Inc. |
| 9670776 | Stabilization system for a mining machine | Feb 24, 15 | Jun 06, 17 | JOY MM DELAWARE, INC. |
| Publication # | Title | Filing Date | Pub Date | Patent Owner |
|---|---|---|---|---|
| 2024/0125,232 | CUTTER HEAD FOR MINING MACHINE | Jul 10, 23 | Apr 18, 24 | Not available |
| 2022/0178,254 | CUTTING DEVICE | Dec 06, 21 | Jun 09, 22 | Not available |
| 2021/0010,371 | CUTTING ASSEMBLY | Mar 21, 19 | Jan 14, 21 | ELEMENT SIX (UK) LIMITED |
| 2020/0347,723 | CUTTING DEVICE AND SUPPORT FOR SAME | Jul 17, 20 | Nov 05, 20 | Not available |
| 2019/0345,823 | ROLLER CUTTER UNIT FOR UNDERCUTTING MACHINE | Nov 10, 16 | Nov 14, 19 | Not available |
| 2018/0298,753 | CONTROL SYSTEM AND METHOD FOR CONTROLLING OPERATION OF AN UNDERGROUND MINING MACHINE | Apr 18, 17 | Oct 18, 18 | CATERPILLAR GLOBAL MINING EUROPE GMBH |
| 2018/0051,561 | CUTTING DEVICE AND SUPPORT FOR SAME | Aug 18, 17 | Feb 22, 18 | Not available |
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