Average Co-Inventor Count = 1.50
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. Sundwiger Eisenhutte Maschinenfabrik Grah & Co. (2 from 12 patents)
2 patents:
1. 5007273 - Four-high roll or six-high roll stand having laterally supported working
2. 4199117 - Winding device for metal strips