Average Co-Inventor Count = 1.45
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. Gewerkschaft Eisenhutte Westfalia, Gmbh (4 from 325 patents)
4 patents:
1. 4159851 - Drive frame and assembly for mining apparatus
2. 4078452 - Drive systems for mining apparatus
3. 4037713 - Scraper-chain conveyors
4. 3957311 - Scraper chain conveyor with ventilation parts