Average Co-Inventor Count = 3.80
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. 3M Innovative Properties Company (5 from 22,081 patents)
5 patents:
1. 4943517 - Imaging system
2. 4824770 - Continuous tone color imaging using laser or light emitting diode sources
3. 4816378 - Imaging system
4. 4814827 - Photographic color proofing apparatus
5. 4705745 - Photographic materials and color proofing system