Average Co-Inventor Count = 3.75
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. Hitachi, Ltd. (1 from 42,517 patents)
2. Renesas Technology Corp. (1 from 3,781 patents)
2 patents:
1. 6790564 - Photomask and manufacturing method of an electronic device therewith
2. 6432790 - Method of manufacturing photomask, photomask, and method of manufacturing semiconductor integrated circuit device