Average Co-Inventor Count = 3.40
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. (4 from 42,485 patents)
4 patents:
1. 5546652 - Amorphos core/coil assembling apparatus
2. 5250788 - Apparatus for handling sheets of paper using robot hands
3. 5101979 - Paper sheet depositing and dispensing apparatus, abnormality recovery
4. 5019249 - Apparatus for handling sheets of paper