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. Copal Company Limited (2 from 192 patents)
2 patents:
1. 4348125 - Paper guide mechanism of printer
2. 4089263 - Impact printer