Average Co-Inventor Count = 5.00
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.-conn. (1 from 1,391 patents)
2. W. R. Grace Co. (1 from 853 patents)
2 patents:
1. 5281491 - Battery separator
2. 5240655 - Process of making a battery separator