Average Co-Inventor Count = 4.44
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. Coal Industry (Patents) Limited (2 from 281 patents)
2 patents:
1. 4458043 - Waterproof sheeting
2. 4080350 - Damp proof compositions