Average Co-Inventor Count = 2.40
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. Helene Curtis, Inc. (2 from 140 patents)
2 patents:
1. 5223252 - Permanent wave composition and method
2. 4913900 - Conditioning permanent wave composition and method