Average Co-Inventor Count = 3.00
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. Agency of Industrial Science and Technology (1 from 1,430 patents)
2. Ministry of International Trade & Industry (1 from 348 patents)
3. Seki Company (1 from 2 patents)
1 patent:
1. 5139739 - Gold alloy for black coloring, processed article of black colored gold