MI-JACK PRODUCTS, INC.
76Patents
33Active
76Granted
45Portfolio score
Filing activity: Oct 23, 1981 → Jan 5, 2021 · 7 expiring within 5 years
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7059159B2 | Security system for cargo trailers | Emerging Cross-Sectional Technologies | 80 | Expired |
| US4667834A | Crane apparatus having hydraulic control system | Emerging Cross-Sectional Technologies | 41 | Expired |
| US7344037B1 | Inventory storage and retrieval system and method with guidance for load-handling vehicle | Physics | 37 | Expired |
| US5257891A | Bi-planar cable cross reeving system | Performing Operations; Transporting | 36 | Expired |
| US6968963B1 | Grappler control system for a gantry crane | Emerging Cross-Sectional Technologies | 35 | Expired |
| US6206127A | Lead wheel steering system for a gantry crane | Performing Operations; Transporting | 34 | Expired |
| US7032763B1 | System and method for automatically guiding a gantry crane | Performing Operations; Transporting | 32 | Expired |
| US7091857B2 | Electronic control system used in security system for cargo trailers | Physics | 29 | Expired |
| US4546891A | Grappler system for lifting apparatus | Performing Operations; Transporting | 28 | Expired |
| US4877365A | Side shift grappler | Performing Operations; Transporting | 28 | Expired |
| US4715762A | Grappler system for lifting apparatus | Performing Operations; Transporting | 25 | Expired |
| US4433952A | Tracked crane for large objects | Performing Operations; Transporting | 24 | Expired |
| US6081292A | Grappler guidance system for a gantry crane | Performing Operations; Transporting | 23 | Expired |
| US4749328A | Auxiliary hoist grapple | Performing Operations; Transporting | 21 | Expired |
| US10077061B2 | Profile detection system and method | Electricity | 20 | Active |
| US5937646A | Hydraulic charge boost system for a gantry crane | Mechanical Engineering; Lighting; Heating | 20 | Expired |
| US5718550A | Load transferring system | Performing Operations; Transporting | 19 | Expired |
| US4544070A | Sway control arrangement for hoist systems | Performing Operations; Transporting | 18 | Expired |
| US7070060B1 | Gantry crane with elevating operator cab | Performing Operations; Transporting | 17 | Expired |
| US4915576A | Side shift grappler | Performing Operations; Transporting | 16 | Expired |
| US5582451A | Side fitting connection apparatus for lifting trailers and containers | Emerging Cross-Sectional Technologies | 16 | Expired |
| US6138846A | Adjustable expansible load lifting device | Performing Operations; Transporting | 15 | Expired |
| US5826734A | Variable elevating cabin | Performing Operations; Transporting | 14 | Expired |
| US6021911A | Grappler sway stabilizing system for a gantry crane | Performing Operations; Transporting | 12 | Expired |
| US4657150A | Overhead crane having bridge mounted for differential movement | Performing Operations; Transporting | 12 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.