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. P. P. Payne Limited (2 from 9 patents)
2 patents:
1. 6527907 - Method of attaching a security device to a substrate
2. 6196383 - Tear tape with holographic image