Average Co-Inventor Count = 5.25
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. Namco Limited (3 from 199 patents)
3 patents:
1. 7017904 - Token-operated game machine
2. 6769687 - Token-operated game machine
3. 5634639 - Ball game apparatus with a plurality of different balls and winning