Average Co-Inventor Count = 3.00
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. Hitachi Shipbuilding and Engineering Co., Ltd. (2 from 80 patents)
2 patents:
1. 4401278 - Apparatus for granulating coal
2. 4346010 - Process for recovering fine coal particles from slurry of finely divided