Average Co-Inventor Count = 5.00
ph-index = 6
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 (4 from 832,966 patents)
2. Hitachi, Ltd. (3 from 42,526 patents)
3. Akita Electronics Co., Ltd. (3 from 13 patents)
4. Hitachi Tobu Semiconductor (2 from 30 patents)
5. Hitachi Semiconductor Ltd. (1 from 1 patent)
7 patents:
1. 6693346 - Semiconductor memory module having double-sided stacked memory chip layout
2. 6521993 - Semiconductor memory module having double-sided stacked memory chip layout
3. 6424030 - Semiconductor memory module having double-sided stacked memory chip layout
4. 6262488 - Semiconductor memory module having double-sided memory chip layout
5. 5708298 - Semiconductor memory module having double-sided stacked memory chip
6. 5587341 - Process for manufacturing a stacked integrated circuit package
7. 5138438 - Lead connections means for stacked tab packaged IC chips