Average Co-Inventor Count = 4.84
ph-index = 8
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. (8 from 42,496 patents)
8 patents:
1. D464644 - Telephone exchange equipment
2. D457509 - Telephone
3. D444148 - Computer housing
4. D440564 - Magnetic disc storage unit for electronic computer
5. D427191 - Computer housing
6. 5819185 - Portable satellite communication apparatus
7. D304724 - Facsimile transceiver
8. D304578 - Facsimile transceiver