Average Co-Inventor Count = 2.25
ph-index = 1
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. Nidec Sankyo Corporation (2 from 729 patents)
2. Sankyo Seiki Mfg. Co., Ltd (1 from 264 patents)
3 patents:
1. 10326333 - Geared motor and damper device
2. 7522358 - Optical head device and manufacturing method therefor
3. 7441258 - Objective lens drive device and optical head device