Average Co-Inventor Count = 5.00
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. Spectra, Inc. (3 from 74 patents)
3 patents:
1. 5172135 - Hot melt ink supply unit
2. 5003322 - Holt melt ink supply unit
3. 4864330 - Method of forming a hot melt ink unit