Average Co-Inventor Count = 3.43
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. Hitachi-Kokusai Electric Inc. (2 from 1,258 patents)
2 patents:
1. 8398771 - Substrate processing apparatus
2. 8076615 - Substrate processing apparatus and method of manufacturing semiconductor device