Average Co-Inventor Count = 4.00
ph-index = 1
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. Hoechst Aktiengesellschaft (2 from 6,662 patents)
2 patents:
1. 5028736 - Process for the separation and recovery of naphthalene-sulfonic acids
2. 4110365 - Process for the manufacture of naphthalene-monosulfonic acids