Average Co-Inventor Count = 2.90
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. Makita Corporation (3 from 2,191 patents)
3 patents:
1. D1040628 - Portable electric hammer drill body
2. D716116 - Cover for brushcutter
3. D689754 - Portable electric drill