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. Osofsky; Howard A. (1 from 1 patent)
2 patents:
1. D300148 - Keycard with indexing channels
2. D295920 - Keycard