Average Co-Inventor Count = 5.00
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. Ricoh Elemex Corporation (4 from 34 patents)
4 patents:
1. 5323770 - Mouth cavity sanitary device
2. 5246367 - Mouth cavity sanitary device
3. 5197458 - Mouth cavity sanitary device
4. 5197460 - Mouth cavity sanitary device