Average Co-Inventor Count = 3.80
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. Hoechst Aktiengesellschaft (4 from 6,662 patents)
2. Hoechst Japan Limited (1 from 66 patents)
5 patents:
1. 6559473 - Light-emitting diodes with hetero-PN-junction
2. 6361917 - Process for patterning poly(arylenevinylene) polymer films by irradiation with light
3. 5919579 - Organic electroluminescent device
4. 5871854 - Organic electroluminescent device
5. 5757193 - Apparatus for detecting defects of wiring board