Average Co-Inventor Count = 4.44
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. Toyo Ink Mfg. Co., Ltd. (2 from 105 patents)
2. Nkk Corporation (1 from 614 patents)
3. Nippon Kokan Kabushiki Kaisha (1 from 487 patents)
2 patents:
1. 4923762 - Precoated steel sheet for two-piece can
2. 4861647 - Precoating metal sheet for two-piece can