Average Co-Inventor Count = 1.71
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. 4850855 - Combustion cylinder structure for oil burner
2. 4846672 - Combustion cylinder structure for oil burner
3. 4714426 - Ignition system for oil burner