Average Co-Inventor Count = 4.44
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. Amano Corporation (2 from 38 patents)
2 patents:
1. 6817537 - Time card and time recorder system using time card
2. 6765600 - Time recorder with a card feed rate adjustment function and time card for use in the same