Average Co-Inventor Count = 2.00
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. Ishikawajima-Harima Jukogyo Kabushiki Kaisha (2 from 306 patents)
2 patents:
1. 4392752 - Oil seal for bearings of turbocharger
2. 4389052 - Oil seal system for shaft of turbocharger