Average Co-Inventor Count = 4.17
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. Tokyo Electric Co. (4 from 492 patents)
4 patents:
1. 4784289 - Ticket issuing device for a ticket machine
2. 4774614 - Magnetic head adjusting device
3. 4725905 - Magnetic disk driving device
4. 4711443 - Sheet supply device