Average Co-Inventor Count = 3.00
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. Chroma Corporation (1 from 7 patents)
2. Envision Technology, Inc. (1 from 1 patent)
2 patents:
1. 4469459 - Color printer
2. 4448556 - Cartridge for matrix printer