Joy MM Delaware, Inc.
185Patents
149Active
185Granted
58Portfolio score
Filing activity: Jul 30, 1993 → May 5, 2017 · 28 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5725283A | Apparatus for holding a cutting bit | Fixed Constructions | 120 | Expired |
| US7934776B2 | Mining machine with driven disc cutters | Fixed Constructions | 43 | Active |
| US5692807A | Highwall mining apparatus | Fixed Constructions | 34 | Expired |
| US6662932B1 | Chain and flight conveyor with swivel links | Performing Operations; Transporting | 33 | Expired |
| US7607866B2 | Drilling rig | Fixed Constructions | 33 | Active |
| US6651804B2 | Self-propelled articulated conveyor system | Performing Operations; Transporting | 32 | Expired |
| US8636140B2 | Chain tension sensor | Physics | 29 | Active |
| US6530537B2 | Movable electric machinery having a trailing cable extending through a hinged sheave bracket assembly | Emerging Cross-Sectional Technologies | 29 | Expired |
| US6497536B1 | Roof support arrangement for mining apparatus and roof bolting equipment | Performing Operations; Transporting | 27 | Expired |
| US8177049B2 | Chain and flight conveyor | Performing Operations; Transporting | 25 | Active |
| US5873431A | Articulated vehicle | Mechanical Engineering; Lighting; Heating | 24 | Expired |
| US8328292B2 | Mining machine with driven disc cutters | Fixed Constructions | 23 | Active |
| US5518299A | Dust control apparatus for longwall mining machinery | Fixed Constructions | 23 | Expired |
| US6302623A | Roof bolting apparatus | Fixed Constructions | 21 | Expired |
| US8727450B2 | Mining machine with driven disc cutters | Fixed Constructions | 21 | Active |
| US9470087B2 | Cutter head for mining machine | Fixed Constructions | 19 | Active |
| US8740314B2 | Bit holding system with an opening for removal of broken bits | Fixed Constructions | 19 | Active |
| US7115822B1 | Indirect entry cable gland assembly | Electricity | 19 | Expired |
| US5811976A | Method and apparatus to determine the location and resistance of an electrical leak within a battery without measuring individual battery cells | Physics | 19 | Expired |
| US5348130A | Advanceable auxiliary conveying apparatus | Performing Operations; Transporting | 19 | Expired |
| US8672415B2 | Advancing longwall system for surface mining | Fixed Constructions | 18 | Active |
| USD687702S1 | Hose clip | General | 18 | Active |
| US8950571B2 | Chain and flight conveyor | Emerging Cross-Sectional Technologies | 17 | Active |
| US8061510B2 | Dual sensor chain break detector | Performing Operations; Transporting | 17 | Active |
| US8141696B2 | Replaceable sound dampening conveyor chain flight | Performing Operations; Transporting | 17 | Active |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.