Harnischfeger Engineers, Inc.
17Patents
0Active
17Granted
32Portfolio score
Filing activity: Apr 30, 1986 → Jul 21, 1994
Most-cited patents
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US5405232A | Automatic storage and retrieval system | Emerging Cross-Sectional Technologies | 177 | Expired |
| US4773807A | High-speed automatic storage and retrieval system and apparatus therefor | Performing Operations; Transporting | 94 | Expired |
| US5385243A | Modular system for automatically staging letters in connection with a letter sorting machine | Emerging Cross-Sectional Technologies | 69 | Expired |
| US5397211A | Automatic storage and retrieval system | Performing Operations; Transporting | 22 | Expired |
| US5361481A | Method of assembling an automatic storage and retrieval system | Emerging Cross-Sectional Technologies | 17 | Expired |
| US4967130A | Method and apparatus for controlling a storage and retrieval machine | Performing Operations; Transporting | 11 | Expired |
| US5015140A | Shuttle guide for a storage and retrieval machine | Performing Operations; Transporting | 11 | Expired |
| US5170863A | Method and apparatus for acceleration and deceleration control of a storage and retrieval machine | Performing Operations; Transporting | 11 | Expired |
| US5044859A | Control system for a storage and retrieval machine | Performing Operations; Transporting | 10 | Expired |
| US5025987A | Rail securement apparatus | Fixed Constructions | 9 | Expired |
| US5279393A | Automatic storage and retrieval machine with improved carriage side guide roller arrangement | Performing Operations; Transporting | 8 | Expired |
| US5091685A | Method and apparatus for controlling the shuttle of a storage and retrieval machine | Performing Operations; Transporting | 7 | Expired |
| US5141081A | Carriage brake for a storage and retrieval machine | Performing Operations; Transporting | 5 | Expired |
| US5048642A | Mast structure | Performing Operations; Transporting | 5 | Expired |
| US5067592A | Mast connecting structure | Mechanical Engineering; Lighting; Heating | 4 | Expired |
| US5056625A | Low profile base for a storage and retrieval machine | Performing Operations; Transporting | 3 | Expired |
| US5170713A | Wheel assembly for a storage and retrieval machine | Performing Operations; Transporting | 2 | Expired |
Source: USPTO / EPO open patent data. Counts and citation impact are objective bibliographic measures.