Average Co-Inventor Count = 5.00
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. Toyo Seikan Kaisha, Ltd. (1 from 586 patents)
1 patent:
1. 4883937 - Butt welding method by means of laser beam