Average Co-Inventor Count = 3.00
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. Wella Aktiengesellschaft (1 from 433 patents)
2. Wella Aktiengessellschaft (1 from 2 patents)
2 patents:
1. 4744154 - Measuring and controlling the moisture content of hair
2. 4541442 - Heat treatment apparatus for heating human hair on the head