Average Co-Inventor Count = 5.46
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. Toda Kogyo Corporation (2 from 386 patents)
2 patents:
1. 6780555 - Black magnetic iron oxide particles and magnetic toner
2. 6383637 - Black magnetic iron oxide particles for magnetic toner and process for producing the same