Average Co-Inventor Count = 3.75
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. Sumitomo Electric Industries, Limited (2 from 10,239 patents)
2 patents:
1. 4821138 - Monitoring device for overhead power transmission system
2. 4610503 - Protective device for overhead wires containing optical fiber units