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. Occidental Chemical Corporation (3 from 462 patents)
3 patents:
1. 5300201 - Photochlorination of phthalic anhydride
2. 5021168 - Process for the preparation and recovery of oxydiphthalic anhydrides
3. 4870194 - Process for the preparation and recovery of oxdiphthalic anhydrides