Average Co-Inventor Count = 5.51
ph-index = 4
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, Ltd. (4 from 42,508 patents)
4 patents:
1. 5536128 - Method and apparatus for carrying a variety of products
2. 5319580 - Diagnostic support system and diagnostic system of equipment
3. 5164905 - Production system with order of processing determination
4. 5100276 - Production system using wafer-like carrier jig