Average Co-Inventor Count = 3.43
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. Sumitomo Electric Industries, Limited (2 from 10,240 patents)
2 patents:
1. 4314774 - Pneumatically inflatable flexible envelope type dam
2. 4178868 - Method and apparatus for displacing oil and seawater in tanks of an oil