Average Co-Inventor Count = 2.00
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. Tanaka Manufacturing Co., Ltd. (4 from 30 patents)
4 patents:
1. D317576 - Digital clock
2. D310037 - Thermometer
3. D309580 - Compass
4. D307850 - Can holder