Average Co-Inventor Count = 2.00
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. Thomson Welding & Inspection Ltd. (2 from 2 patents)
2 patents:
1. 4735353 - Friction welding
2. 4702405 - Friction welding apparatus