Average Co-Inventor Count = 3.96
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. Ricoh Company, Ltd. (3 from 28,566 patents)
3 patents:
1. 4874264 - Selective magnetic attachment of a print head to a drive belt
2. 4795284 - Printing device with carriage and carrier therefor each integrally
3. 4116568 - Carriage driving mechanism for printer