Average Co-Inventor Count = 2.67
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. The Japan Steel Works, Ltd. (2 from 407 patents)
2 patents:
1. 4631170 - Calcium-nickel-misch metal-aluminum quaternary alloy for hydrogen storage
2. 4381940 - Low alloy heat-resisting steel for high temperature use