Average Co-Inventor Count = 1.60
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. U.S. Philips Corporation (2 from 14,087 patents)
2 patents:
1. 4651048 - High pressure discharge lamp with arc tube heat shield
2. 4621216 - High-pressure discharge lamp with shielded electrode