Average Co-Inventor Count = 4.50
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. Austrian Energy & Environment Sgp/waagner Biro Gmbh (2 from 7 patents)
2. Lenzing Aktiengesellschaft (1 from 187 patents)
3. Austrian Energy & Environment Sgp/wagner-biro Gmbh (1 from 1 patent)
3 patents:
1. 5705073 - Method for the disposal of excess sludge
2. 5643548 - Drying and separating process and plant
3. 5393225 - Rotating tube heat treatment installation, in particular rotating