Average Co-Inventor Count = 3.60
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. Kabushiki Kaisha Ace Denken (6 from 99 patents)
6 patents:
1. 5417331 - Conveyance equipment for paper or the like, and paper money collection
2. 5375966 - Reserve tank structure for pachinko island
3. 5366110 - Game token dispenser
4. 5318163 - Ball conveying gutter system of pachinko island
5. 5292131 - Curtain panel assembly for game machine island
6. 5289924 - Unit support structure for game machine island