Average Co-Inventor Count = 1.92
ph-index = 4
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 (8 from 477 patents)
8 patents:
1. D902988 - Tone generator for electronic musical instrument
2. D884782 - Electronic percussion instrument
3. D881984 - Percussion detecting device
4. D837874 - Electronic percussion instrument
5. D735146 - Effects pedal
6. D719211 - Electric piano
7. 7963792 - Plug detachment prevention structure
8. 7466554 - Pivotal mounting structure for an electronic device