Average Co-Inventor Count = 3.20
ph-index = 4
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. Unicharm Corporation (3 from 1,645 patents)
2. Richell Corporation (1 from 10 patents)
4 patents:
1. D897056 - Pet toilet
2. D840611 - Pet toilet
3. D796748 - Pet toilet
4. 8528257 - Convertible pet barrier with a connection member