Average Co-Inventor Count = 3.00
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. Ebara Corporation (2 from 2,514 patents)
2. Ebara Field Tech. Corporation (1 from 1 patent)
2 patents:
1. 8439569 - Combined bearing and rotary machine
2. D660890 - Unit bearing