Average Co-Inventor Count = 2.00
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. Seikosha Co., Ltd. (2 from 696 patents)
2 patents:
1. D371572 - Date/time stamper
2. D370935 - Date/time stamper