Average Co-Inventor Count = 4.00
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. Idemitsu Kosan Company, Limited (2 from 2,271 patents)
2 patents:
1. 5686398 - Additive for lubricant or fuel, lubricating oil composition or fuel
2. 5326488 - Mannich reaction product and process for producing the same and use of