Average Co-Inventor Count = 2.00
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. Silver Seiko Ltd. (2 from 54 patents)
2 patents:
1. D297714 - Score collector for base-ball game
2. D284771 - Menu printer