Average Co-Inventor Count = 2.68
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. Matsushita Electric Works, Ltd. (4 from 1,623 patents)
2. Panasonic Electric Works Co., Ltd. (1 from 394 patents)
5 patents:
1. 7478640 - Hair iron
2. 7171970 - Hair setting device
3. 6907888 - Ion generator and hairbrush using the same
4. 6029677 - Hair styling iron
5. 5983903 - Hair iron