Average Co-Inventor Count = 5.33
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. Matsushita Electric Industrial Co., Ltd. (2 from 27,375 patents)
2. Hodogaya Chemical Co., Ltd. (2 from 328 patents)
2 patents:
1. 5707747 - Amine compound and electro-luminescence device comprising same
2. 5639914 - Tetraaryl benzidines