Average Co-Inventor Count = 2.00
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. British Telecommunications Public Limited Company (1 from 1,874 patents)
2. The Post Office (1 from 159 patents)
2 patents:
1. 5331452 - Optical detector
2. 4166985 - Injection laser stabilization