Average Co-Inventor Count = 2.00
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. Denso Corporation (2 from 19,788 patents)
2 patents:
1. 6846214 - Method of manufacturing a spark plug for an internal combustion engine
2. 6078129 - Spark plug having iridium containing noble metal chip attached via a