Average Co-Inventor Count = 6.00
ph-index = 1
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. Toda Kogyo Corporation (1 from 386 patents)
2. Sumitomo Special Metals Co., Ltd. (1 from 240 patents)
1 patent:
1. 4959273 - Corrosion-resistant permanent magnet and method for preparing the same