Average Co-Inventor Count = 2.40
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. Dresser Industries, Inc. (1 from 1,238 patents)
2. Lodge-cottrell Limited (1 from 5 patents)
2 patents:
1. 4216708 - Fume containment
2. 4165680 - Fume extraction canopy with baffle deflector