Average Co-Inventor Count = 3.43
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. Idemitsu Kosan Company, Limited (2 from 2,271 patents)
2 patents:
1. 8394749 - Pressure medium oil
2. 8292813 - Transmission medium for ultrasonic diagnosis