Average Co-Inventor Count = 1.67
ph-index = 6
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 (10 from 58,130 patents)
10 patents:
1. 10321216 - Wearable device
2. 9516402 - Earpiece and electro-acoustic transducer with protrusions and/or grooved passages
3. 8983110 - Headphone device
4. 8767997 - Headphone device
5. 8270648 - Earpiece and electro-acoustic transducer
6. 8208676 - Earpiece and earphone
7. 7120268 - Headphone
8. 6970572 - Headphone device
9. 6560346 - Pipe microphone device
10. 5949896 - Earphone