Average Co-Inventor Count = 4.21
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. Other (3 from 832,891 patents)
2. Japan Energy Corporation (1 from 130 patents)
3. Asahi Denka Kogyo Kabushiki Kaisha (1 from 98 patents)
4. Asahi Denka Kogyo K.k. (1 from 92 patents)
4 patents:
1. 6875730 - Lubricant for refrigerating machine employing ammonia refrigerant
2. 6568195 - Ammonia refrigerating apparatus
3. 6335311 - Lubricant for refrigerators using ammonia refrigerant
4. 4963370 - Process for producing proteinous material