Average Co-Inventor Count = 3.00
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. North American Philips Corporation (1 from 950 patents)
2. North American Philips Lighting Corp. (1 from 25 patents)
2 patents:
1. 4973878 - Filament structure and method of making such structure
2. 4895540 - Filament support structure mounting method