Average Co-Inventor Count = 2.00
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. Other (1 from 832,880 patents)
2. Hitachi, Ltd. (1 from 42,508 patents)
3. Hitachi Hokkai Semiconductor Ltd. (1 from 26 patents)
2 patents:
1. 6838767 - Semiconductor device
2. 6472749 - Semiconductor device having a shortened wiring length to reduce the size of a chip