Average Co-Inventor Count = 2.67
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, Ltd. (2 from 42,494 patents)
2 patents:
1. 6477521 - Integrated information processing system capable of supplying specific information to person
2. 4734859 - Method and apparatus for handling transaction slips including illegible