Average Co-Inventor Count = 5.46
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. Other (1 from 832,912 patents)
2. Degussa - Huls Ag (1 from 148 patents)
3. Evonik Degussa Gmbh (1,242 patents)
2 patents:
1. 6316050 - Method of producing hydrophobic pyrogenically produced oxides
2. 5959005 - Silanized silica