Average Co-Inventor Count = 4.80
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. Sumitomo Metal Industries, Inc. (2 from 929 patents)
2. Toyota Jidosha Kabushiki Kaisha (1 from 36,713 patents)
2 patents:
1. 5489345 - Steel for use in exhaust manifolds of automobiles
2. 5340415 - Ferritic stainless steel plates and foils and method for their production