Average Co-Inventor Count = 2.86
ph-index = 1
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. Nippon Steel Corporation (2 from 3,548 patents)
2. Ruhrkohle Ag (1 from 69 patents)
2 patents:
1. 6580743 - Stave cooler
2. 5421963 - Coke-feeding device with housing for a dry cooling installation for coke