Average Co-Inventor Count = 1.33
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. Aktiebolaget Tudor (1 from 32 patents)
2. Accumulatorenfabriken Wilhelm Hagen Ag (1 from 1 patent)
2 patents:
1. 4086401 - Electric storage battery separator
2. 3933522 - Accumulator cell