Average Co-Inventor Count = 3.43
ph-index = 1
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 (2 from 186 patents)
2 patents:
1. D515128 - Bobbin for heat transfer printing film
2. 6033508 - Method and apparatus for manufacturing ribbon roll