Average Co-Inventor Count = 8.00
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. Tdk Corporation (2 from 7,965 patents)
2 patents:
1. 5703901 - Calcination furnace
2. 5559826 - Calcination furnace