Average Co-Inventor Count = 2.00
ph-index = 1
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. Kao USA Inc. (2 from 33 patents)
2 patents:
1. 12465137 - Handle for brush head
2. D1056514 - Handle for brush head