Average Co-Inventor Count = 2.30
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. Sanyo Electric Co., Ltd. (5 from 8,782 patents)
5 patents:
1. 8283834 - Power generating apparatus having ball bearings
2. 8212450 - Generator including an electret member
3. 8164231 - Electret device comprising electret film formed on main surface of substrate and electrostatic operating apparatus
4. 7956497 - Electret device and electrostatic induction conversion apparatus comprising the same
5. 7525205 - Electric power generator