Average Co-Inventor Count = 2.21
ph-index = 3
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 (7 from 477 patents)
7 patents:
1. 12406642 - Electronic hi-hat and operating method of electronic hi-hat
2. 11875765 - Electronic percussion instrument and hitting detection method
3. D1008352 - Pad for electronic hi-hat
4. D916952 - Drum lug
5. 10147409 - Electronic percussion instrument and detecting method thereof
6. 9947307 - Electronic percussion instrument
7. 8686264 - Percussion instrument apparatus, system and process