Inventor · disambiguated record
Tohru Suganuma
Also filed as: SUGANUMA TOHRU
15 granted patents·6 pending applications·73 citations·filing 1995–2025
88Inventor score
Technology areasG03G
Top patents by PatentIndex Score
21 records- 0184US5652079ACarrier for dry two-component developer and method of producing the sameRICOH KK·Filed 1995·Granted Jul 29, 1997·37 cites·104 claims
- 0281US7438245B2Milling and classifying apparatus, collision mill, air classifier, toner, and method for producing tonerRICOH KK·Filed 2005·Granted Oct 21, 2008·10 cites·28 claims
- 0374US2025291267A1Electrophotographic developer, electrophotographic image forming method, electrophotographic image forming apparatus, and process cartridgeNAGAYAMA MASASHI·Filed 2025·Application pending·0 cites
- 0473US2025306493A1Carrier, two-component developing agent, process cartridge, image forming apparatus, and image forming methodKISHIDA HIROYUKI·Filed 2025·Application pending·0 cites
- 0570US7318990B2Toner, developer, image forming method, image forming apparatus and toner manufacturing methodRICOH KK·Filed 2004·Granted Jan 15, 2008·12 cites·17 claims
- 0670US6319646B1Carrier for electrophotographic developer, method for manufacturing, developer, container including the developer, and image forming apparatus using the developer wherein the carrier satisfies the relationship 1.0≦C2/C1≦1.3RICOH TECHNOLOGY RES INC·Filed 2000·Granted Nov 20, 2001·14 cites·26 claims
- 0765US12436479B2Carrier for forming electrophotographic image, developer for forming electrophotographic image, electrophotographic image forming method, electrophotographic image forming apparatus, and process cartridgeNAGAYAMA MASASHI·Filed 2021·Granted Oct 7, 2025·0 cites·16 claims
- 0864US12105472B2Carrier for forming electrophotographic image, developing agent for forming electrophotographic image, method of forming electrophotographic image, electrophotographic image forming apparatus, and process cartridgeTAKEUCHI KENTO·Filed 2023·Granted Oct 1, 2024·0 cites·14 claims
- 0963US12147192B2Carrier for developing electrostatic latent image, two-component developer, image forming apparatus, process cartridge, and image forming methodKISHIDA HIROYUKI·Filed 2022·Granted Nov 19, 2024·0 cites·9 claims
- 1060US12379678B2Carrier for forming electrophotographic image, developer, image forming method, image forming apparatus, and process cartridgeSUZUKI NAMIE·Filed 2022·Granted Aug 5, 2025·0 cites·12 claims
- 1160US12372893B2Carrier, developer, image forming method, and process cartridgeMASUKO KAEDE·Filed 2022·Granted Jul 29, 2025·0 cites·10 claims
- 1257US11934145B2Developing apparatus, developer for electrophotographic image formation, electrophotographic image forming method, and electrophotographic image forming apparatusMASUDA MINORU·Filed 2022·Granted Mar 19, 2024·0 cites·5 claims
- 1357US10474051B2Carrier for developer of electrostatic latent image, two-component developer, replenishing developer, image forming apparatus, and toner stored unitTAKII MARIKO·Filed 2018·Granted Nov 12, 2019·0 cites·11 claims
- 1455US10234783B2Carrier, developer, image forming apparatus, developer stored unit, and image forming methodSAKATA KOICHI·Filed 2016·Granted Mar 19, 2019·0 cites·12 claims
- 1551US10444651B2Carrier, developer, supplemental developer, image forming apparatus, image forming method, and process cartridgeTAKII MARIKO·Filed 2018·Granted Oct 15, 2019·0 cites·11 claims
- 1651US2024302763A1Image forming method, carrier, developer, and image forming apparatusMASUDA MINORU·Filed 2024·Application pending·0 cites
- 1751US2024295834A1Carrier, developing agent, image forming method, image forming apparatus, and process cartridgeNAGAYAMA MASASHI·Filed 2024·Application pending·0 cites
- 1847US2023305439A1Carrier for electrophotographic image formation, developer for electrophotographic image formation, electrophotographic image forming method, electrophotographic image forming apparatus, and process cartridgeNAGAYAMA MASASHI·Filed 2023·Application pending·0 cites
- 1944US10025214B2Carrier, developing agent, image forming apparatus, image forming method, replenishment toner, and process cartridgeNAGAYAMA MASASHI·Filed 2016·Granted Jul 17, 2018·0 cites·10 claims
- 2044US2024160122A1Electrophotographic image forming carrier, electrophotographic image forming developer, electrophotographic image forming method, and electrophotographic image forming apparatusTAKEUCHI KENTO·Filed 2023·Application pending·0 cites
- 2141US8012662B2Method of manufacturing tonerRICOH CO LTD·Filed 2008·Granted Sep 6, 2011·0 cites·9 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →