Average Co-Inventor Count = 4.64
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. Nishikawa Co., Ltd. (8 from 12 patents)
2. Archem Inc. (2 from 26 patents)
8 patents:
1. D1039295 - Cushion
2. D1036155 - Cushion
3. D1035329 - Cushion material
4. D1033985 - Cushion material
5. D1026503 - Cushion
6. D966011 - Cushion material
7. D927890 - Mattress
8. D927227 - Mattress