Average Co-Inventor Count = 4.00
ph-index = 1
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. (2 from 42,517 patents)
2. Hitachi Video and Information System, Inc. (2 from 46 patents)
2 patents:
1. 6108045 - Display apparatus with cathode ray tube
2. 6011593 - Cathode ray tube with apparatus for reducing variation of deflection