Average Co-Inventor Count = 3.00
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. Seiko Epson Corporation (1 from 33,490 patents)
1 patent:
1. 6635896 - Optical disk stamper examination machine, optical disk stamper examination method, and optical disk stamper