Average Co-Inventor Count = 3.00
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. Sumitomo Special Metals Co., Ltd. (2 from 240 patents)
2. Sumitomo Speical Metals Co., Ltd. (1 from 1 patent)
3 patents:
1. 5316595 - Process for producing magnets having improved corrosion resistance
2. 5089066 - Magnets having improved corrosion resistance
3. 4837114 - Process for producing magnets having improved corrosion resistance