Average Co-Inventor Count = 7.00
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. Hitachi-Kokusai Electric Inc. (2 from 1,258 patents)
2 patents:
1. D819463 - Protector tube for thermocouple
2. D818850 - Protector tube for thermocouple