Average Co-Inventor Count = 2.85
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. Sony Corporation (8 from 58,129 patents)
8 patents:
1. 10497392 - Disk holder for disk cartridge
2. 9261899 - Electronic apparatus
3. 8978054 - Cartridge for accomodating a disc-shaped recording medium
4. 7154705 - Magnetic head for rotary head drum
5. 7016148 - Magnetic head for rotary head drum
6. 4814902 - Apparatus for recording and/or reproducing with video and multiple audio
7. 4786011 - Loading device for directing a tape-like element from a supply reel to a
8. 4779818 - Tape-like element loading device