Average Co-Inventor Count = 2.67
ph-index = 2
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. Toyotomi Kogyo Co., Ltd. (2 from 86 patents)
2 patents:
1. 4726762 - Wick actuating device for the lever actuation type for oil burner
2. 4424019 - Device for vertically moving the wick of an oil burner