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. Nippon Steel Corporation (1 from 3,562 patents)
2. Nihon Parkerizing Co., Ltd. (1 from 128 patents)
2 patents:
1. 4857225 - Cleaning chemical for aluminium surface
2. 4784731 - Chromate treatment of a metal coated steel sheet