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. Krupp Polysius Ag (1 from 165 patents)
2. Polysius Ag (1 from 97 patents)
2 patents:
1. 4628657 - Ceiling and wall construction
2. 4193759 - Rotary kiln with a plurality of planetary cooling tubes