Average Co-Inventor Count = 3.75
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. Other (1 from 832,966 patents)
2. Naintsch Mineralwerke Gessellschaft M.b.h. (1 from 1 patent)
2 patents:
1. 5759403 - Method for purifying waste water using activated slude to increase
2. 4775991 - Method of and apparatus for grain-size analysis