Average Co-Inventor Count = 4.44
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. (3 from 42,496 patents)
3 patents:
1. 5546652 - Amorphos core/coil assembling apparatus
2. 5101979 - Paper sheet depositing and dispensing apparatus, abnormality recovery
3. 5019249 - Apparatus for handling sheets of paper