Average Co-Inventor Count = 3.43
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. Sakae Rhythm Musical Instrument Ltd. (6 from 6 patents)
6 patents:
1. 8946531 - Spring force adjustment structure in high-hat stand and high-hat stand including the spring force adjustment structure
2. 8865988 - Cymbal holding structure, cymbal stand having the holding structure, and fastener used in the holding structure
3. 8759654 - Adjustment device of an angle for supporting musical instruments and a device for supporting musical instruments having the same
4. 8440895 - Pedal for drum
5. 8431808 - Drum holding structure and drum held by the holding structure
6. 7977558 - Strainer, and snappy holding structure by the strainer