Average Co-Inventor Count = 2.79
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. Hitachi, Ltd. (4 from 42,485 patents)
4 patents:
1. D302685 - Facsimile transceiver
2. 4838655 - Projector using guest-host liquid crystal cells for improved color purity
3. D295414 - Computer display
4. D266249 - Magnetic tape drive unit for a computer system