Average Co-Inventor Count = 4.50
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. Sony Corporation (3 from 58,131 patents)
3 patents:
1. 7449221 - Metallic thin film type magnetic recording medium and method of manufacturing thereof
2. 7214436 - Magnetic recording medium and process for producing same
3. 7070871 - Metallic thin film type magnetic recording medium and method of manufacturing thereof