Average Co-Inventor Count = 4.00
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. Nippon Steel Corporation (2 from 3,548 patents)
2. Sakuranomiya Chemical Co., Ltd (1 from 2 patents)
2 patents:
1. 4177323 - Coated metal sheet for use in producing a drawn and ironed can body
2. 4160056 - Steel sheet for DrD cans and DI cans