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. Mitsubishi Paper Mills Limited (1 from 622 patents)
2. Nihon Parkerizing Co., Ltd. (1 from 128 patents)
3. The Nippon Synthetic Chemical Industry Co., Ltd. (82 patents)
2 patents:
1. 4966634 - Composition of the surface treatment for metal and the treatment method
2. 4877688 - Ink-jet recording sheet