Average Co-Inventor Count = 1.60
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. Vtech Communications Limited (2 from 64 patents)
2 patents:
1. 6667738 - Touch screen overlay apparatus
2. 6201868 - Portable telephone handset construction