Average Co-Inventor Count = 2.57
ph-index = 3
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. Usfilter Corporation (2 from 35 patents)
2. Research Frontiers Inc. (1 from 51 patents)
3 patents:
1. 4131334 - Light polarizing materials, suspensions thereof, and process for
2. 3969492 - Recovery of elemental sulfur from sulfur dioxide bearing waste gases
3. 3960687 - Electrostatically enhanced removal of sulfur dioxide from gaseous