Average Co-Inventor Count = 2.00
ph-index = 4
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. Niles Parts Company, Ltd. (3 from 186 patents)
2. Rigaku Keisoku Kabushiki Kaisha (1 from 1 patent)
4 patents:
1. 6554817 - Device for disposing excrement
2. 6443939 - Device for disposing excrement
3. 5681297 - Device for disposing excrement
4. 4605233 - Magnetic fluid sealing device