Inventor · disambiguated record
Rika Doi
Also filed as: DOI RIKA
3 granted patents·47 citations·filing 1991–1994
72Inventor score
Files withCANON KK3
Top patents by PatentIndex Score
3 records- 0168US5508139AMagnetic toner for developing electrostatic imageCANON KK·Filed 1994·Granted Apr 16, 1996·18 cites·16 claims
- 0255US5306588ATreated silica fine powder and toner for developing electrostatic imagesCANON KK·Filed 1992·Granted Apr 26, 1994·20 cites·17 claims
- 0353US5288579ADeveloper for developing electrostatic image, image forming apparatus, apparatus unit and facsimile apparatusCANON KK·Filed 1991·Granted Feb 22, 1994·9 cites·77 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →