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. Kao Corporation (2 from 3,600 patents)
2 patents:
1. 6407269 - Catalyst for transesterification
2. 6383970 - Solid acid catalyst