Average Co-Inventor Count = 2.67
ph-index = 3
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. (3 from 42,488 patents)
3 patents:
1. 6978928 - Medium handling machine
2. 5626822 - Cash transaction machine and method therefor
3. 5315511 - Method of determining the acceptability of a request to preengage