Average Co-Inventor Count = 3.46
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. Tokuyama Corporation (3 from 504 patents)
3 patents:
1. 6719926 - Chromene compound
2. 6525194 - Chromene compound
3. 5475074 - Polymerizable composition, organic glass and ophthalmic lens