Average Co-Inventor Count = 2.77
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. Toyotomi Kogyo Co., Ltd. (3 from 86 patents)
3 patents:
1. 4611574 - Protective guard for oil burner
2. 4589842 - Device for adjusting the vertical position of wick in oil burner
3. 4424019 - Device for vertically moving the wick of an oil burner