Average Co-Inventor Count = 5.00
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. Sumitomo Metal Industries, Inc. (1 from 929 patents)
2. Konan Camera Research Institute Inc. (1 from 24 patents)
1 patent:
1. 3988530 - Automatic defect-detecting method and apparatus