Average Co-Inventor Count = 2.00
ph-index = 1
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. Kabushiki Kaisha Kawai Gakki Seisakusho (1 from 455 patents)
2. Kawai Musical Instruments Manufacturing Co., Ltd. (1 from 25 patents)
2 patents:
1. 11037533 - Upright keyboard instrument
2. 10991347 - Leg of keyboard instrument and leg attachment structure