Average Co-Inventor Count = 4.00
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. Ngk Insulators, Inc. (1 from 4,924 patents)
2. Patent-Treuhand-Gesellschaft F. Elektrische Gluehlampen Mbh (1 from 66 patents)
1 patent:
1. 5625256 - High-pressure discharge lamp having a ceramic discharge vessel, sintered