Average Co-Inventor Count = 3.75
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. Oy Tampella Ab (1 from 160 patents)
2. Tamrock Oy (1 from 37 patents)
2 patents:
1. 5601148 - Arrangement for measuring the position of a feed beam in a rock drilling
2. 5050283 - Arrangement for handling drill rods in a rock drilling unit or the like