Average Co-Inventor Count = 2.40
ph-index = 2
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. O&k Orenstein & Koppel Aktiengesellschaft (3 from 110 patents)
3 patents:
1. 4776449 - Stacker with connecting conveyor
2. 4681205 - Displaceable inclined hoist
3. 4486049 - Heavy breaking giant excavating equipment