Average Co-Inventor Count = 2.57
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. Roland Corporation (9 from 477 patents)
9 patents:
1. D1092608 - Electronic percussion instrument
2. D1087213 - Electronic percussion instrument
3. D1034792 - Pedalboard
4. D1031825 - Pedalboard
5. D1008352 - Pad for electronic hi-hat
6. D924314 - Electronic cymbal
7. D916951 - Drum claw hook
8. D916952 - Drum lug
9. D866654 - Acoustic effect adder for electronic musical instrument