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. Citizen Watch Company, Ltd. (1 from 2,002 patents)
2. Sumitomo Special Metals Co., Ltd. (1 from 240 patents)
3. Sumitomo Special Metal Co. Ltd. (1 from 26 patents)
2 patents:
1. 5295296 - Method and apparatus for working a clad material
2. 5234150 - Method of manufacturing spotwise partial clad material