Average Co-Inventor Count = 1.00
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. F. L. Smidth & Co. (1 from 70 patents)
1 patent:
1. 6257877 - Kiln plant and method for manufacturing cement