Assignee
KOYAMA OSAMU
JP·2 granted patents·0 citations·filing 2012–2020
Top patents by PatentIndex Score
2 records- 0136US11138988B2Playing method for playing multi-language contents for education, and data structure and program thereforKOYAMA OSAMU·Filed 2020·Granted Oct 5, 2021·0 cites·17 claims
- 0236US8909092B2Process cartridge and electrophotographic image forming apparatus to charge a photosensitive drumKOYAMA OSAMU·Filed 2012·Granted Dec 9, 2014·0 cites·23 claims
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