Average Co-Inventor Count = 3.77
ph-index = 8
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. (18 from 28,544 patents)
2. Sony Corporation (3 from 58,129 patents)
3. Nisca Corporation (1 from 489 patents)
21 patents:
1. D844630 - Disc cartridge
2. D766251 - Disc cartridge
3. 8485653 - Compact front-operable image forming apparatus
4. D667785 - Battery charger
5. 8152294 - Compact front-operable image forming apparatus
6. 7469981 - Compact front-operable image forming apparatus
7. D559892 - Copying machine with scanning and printing functions
8. D559898 - Document feeder for a digital copying machine
9. D559897 - Document feeder for a digital copying machine
10. D557736 - Copying machine with scanning and printing functions
11. 7275808 - Ink cartridge and ink jet printer
12. D548779 - Printer ink cartridge
13. D541335 - Printer ink cartridge
14. D541281 - Scanner
15. D539342 - Printer ink cartridge