Average Co-Inventor Count = 2.67
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. Zippo Manufacturing Company (2 from 49 patents)
2 patents:
1. 11079110 - Childproof ignition device
2. D908989 - Power-operated air blower