Average Co-Inventor Count = 1.67
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. Idemitsu Kosan Company, Limited (1 from 2,276 patents)
2. Hino Motors, Ltd. (1 from 243 patents)
3. Sankyo Radiator Co., Ltd. (1 from 5 patents)
2 patents:
1. 7594536 - EGR cooler
2. 4556537 - Reactor