Average Co-Inventor Count = 2.77
ph-index = 3
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 1,874 patents)
2. British Telecommunications Corporation (1 from 445 patents)
3 patents:
1. 7139984 - Data entry in a virtual environment with position indicator movement constrained between locations associated with selectable options
2. 5349383 - Two layer video signal coding
3. 4985766 - Video coder