Average Co-Inventor Count = 13.00
ph-index = 3
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. (3 from 42,508 patents)
2. Hitachi Microcomputer System, Ltd. (3 from 64 patents)
3 patents:
1. 5869888 - Semiconductor device with lead structure on principal surface of chip
2. 5714405 - Semiconductor device
3. 5583375 - Semiconductor device with lead structure within the planar area of the