Average Co-Inventor Count = 4.00
ph-index = 2
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. Alps Electric Co., Ltd. (2 from 4,048 patents)
2 patents:
1. 4811142 - Magnetic head for vertical magnetic recording and method of producing
2. 4768121 - Magnetic head formed by composite main pole film and winding core for