Average Co-Inventor Count = 12.00
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. Hitachi, Ltd. (3 from 42,496 patents)
2. Kanto Chemical Co., Inc. (2 from 6 patents)
3 patents:
1. 4694098 - Colorless liquid crystalline compounds
2. 4584120 - Liquid crystal compound and liquid crystal composition
3. 4564694 - Colorless liquid crystalline compounds