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. W. R. Grace Co. (2 from 853 patents)
2 patents:
1. 4474824 - Methods of preparing hydrous silica gels
2. 4303641 - Hydrous silica gel containing dentifrice