Average Co-Inventor Count = 2.86
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. Tokyo Shibaura Denki Kabushiki Kaisha (5 from 2,916 patents)
5 patents:
1. 4598979 - Electrochromic display device
2. 4496638 - Solid-electrolyte cell
3. 4483694 - Oxygen gas permselective membrane
4. 4404268 - Solid state lithium cell
5. 4312733 - Unit for measuring alkali metal vapor concentration