Average Co-Inventor Count = 2.67
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. Dr. Ing. Rudolf Hell Gmbh (2 from 140 patents)
2. Hell Gravure Systems Gmbh & Co. Kg (1 patent)
2 patents:
1. 4500972 - Apparatus for converting digital chrominance signals of a cartesian
2. 4464677 - Method and circuit arrangement for partial recorrection of color