Average Co-Inventor Count = 6.46
ph-index = 4
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. Ngk Spark Plug Company, Limited (3 from 2,606 patents)
2. Nor Spark Plug Co., Ltd. (1 from 1 patent)
4 patents:
1. 7484897 - Optical module, optical module substrate and optical coupling structure
2. 7404680 - Optical module, optical module substrate and optical coupling structure
3. 7221829 - Substrate assembly for supporting optical component and method of producing the same
4. 7150569 - Optical device mounted substrate assembly