Average Co-Inventor Count = 7.72
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 Works, Ltd. (2 from 1,623 patents)
2. Panasonic Electric Works Co., Ltd. (1 from 394 patents)
3 patents:
1. 7789466 - Chair-type massage machine
2. 7381194 - Massage chair
3. 7241271 - Massage machine