Average Co-Inventor Count = 2.40
ph-index = 3
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. Matsushita Electric Industrial Co., Ltd. (3 from 27,375 patents)
3 patents:
1. 7310084 - Multi-way operation switch, input device and input unit
2. 7129432 - Lighted switch unit
3. 6670750 - Luminous EL sheet having a domed diaphragm and a switch employing the EL sheet