Average Co-Inventor Count = 1.60
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. Toppan Printing Co., Ltd. (2 from 1,268 patents)
2. Sharp Kabushiki Kaisha Corporation (1 from 25,550 patents)
2 patents:
1. 5671031 - Reflection type liquid crystal display device and personal digital
2. 4846556 - Color filter and method of manufacturing the same