Average Co-Inventor Count = 1.50
ph-index = 4
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. Primages Inc. (4 from 12 patents)
4 patents:
1. 4840504 - Printer ribbon cartridge with means for transversely displacing ribbon
2. 4790677 - Method and apparatus for determining halt of tape feed in a tape
3. 4675701 - Vibrating thermal printing
4. 4623271 - Ink ribbon cartridge for a printer including means for transversely