Average Co-Inventor Count = 5.00
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. Shin-etsu Chemical Co., Ltd. (2 from 5,967 patents)
2 patents:
1. 9488907 - Photomask blank, process for production of photomask, and chromium-containing material film
2. 8968972 - Photomask blank, process for production of photomask, and chromium-containing material film