Average Co-Inventor Count = 3.43
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. British Telecommunications Public Limited Company (2 from 1,876 patents)
2 patents:
1. 5748813 - Free space optical communication system
2. 5416864 - Optical fiber amplified tapping network and method using same