Average Co-Inventor Count = 5.00
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. Sumitomo Rubber Industries Limited (2 from 4,428 patents)
2 patents:
1. 5407341 - Metallic mold for injection-molding of golf balls
2. 5090705 - Golf ball