Average Co-Inventor Count = 2.67
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. Ngk Insulators, Inc. (2 from 4,920 patents)
2 patents:
1. 5139856 - Plated ceramic or glass substrate having undercoat
2. 4914260 - Ceramic multi-layer printed circuit boards