Average Co-Inventor Count = 1.20
ph-index = 3
The patent ph-index is calculated by counting the number of publications for which an author has been cited by other authors at least that same number of times.
Company Filing History:
1. Rpc, Inc. (2 from 38 patents)
2. Midland-Ross Corporation (1 from 199 patents)
3 patents:
1. 4149747 - Grappler spreader for closely stacking cargo containers
2. 3966069 - Spreader for lifting containers
3. 3944272 - Cargo container spreader with articulated structure for skewing and