Average Co-Inventor Count = 4.44
ph-index = 3
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 (4 from 3,563 patents)
2. Toagosei Chemical Industry, Co., Ltd. (1 from 65 patents)
3. Sakuranomiya Chemical Co., Ltd (1 from 2 patents)
4 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
3. 4104419 - Surface treatment of a tin-plate
4. 3932144 - Coated metallic sheet for use in making a container