Average Co-Inventor Count = 4.00
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. Tokyo Shibaura Electric Co., Ltd. (2 from 681 patents)
2 patents:
1. 4208611 - Fluorescent lamp containing a green emitting rare earth silicate
2. 4180478 - Alkaline earth halide-rare earth fluoride phosphor