Average Co-Inventor Count = 3.69
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 1,874 patents)
2. Bt&d Technologies Limited (2 from 19 patents)
4 patents:
1. 5594578 - Optical communications system including doped optical fiber filter
2. 5342425 - Fabrication of fused fibre devices
3. 5321777 - Fibre modulators
4. 5288301 - Method for fabrication of fused fibre devices