Average Co-Inventor Count = 1.00
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. Shachihata Inc. (3 from 72 patents)
3 patents:
1. D446805 - Changeable character stamp
2. D446542 - Stamp receiver
3. D411109 - Combined packaging container and cap