Average Co-Inventor Count = 2.82
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. France Bed Co., Ltd. (4 from 57 patents)
4 patents:
1. 5647077 - Water mattress apparatus and a water bag used for the water mattress
2. 5513401 - Watermattress apparatus
3. 4498477 - Mattress
4. 4202257 - Cooking apparatus