Average Co-Inventor Count = 3.27
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. Earth Chemical Co., Ltd. (3 from 29 patents)
3 patents:
1. 6391329 - Insect pest control method
2. 6199315 - Method and apparatus for catching fleas
3. 6143313 - Insect pest control method