Average Co-Inventor Count = 2.40
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. Sony Chemicals Corporation (4 from 186 patents)
4 patents:
1. 6783820 - Thermal transfer recording media
2. 6099967 - Heat transfer ink ribbon
3. 5908252 - Thermal printing ink ribbon
4. 5858546 - Thermal transfer recording medium