Average Co-Inventor Count = 2.67
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 (4 from 477 patents)
4 patents:
1. D507591 - Adjustable trigger
2. D497935 - Adjustable trigger
3. 6794569 - Acoustic instrument triggering device and method
4. D492342 - Drum trigger