Inventor · disambiguated record
Masasumi Yahata
Also filed as: YAHATA MASASUMI
10 granted patents·588 citations·filing 1989–1999
92Inventor score
Technology areasG03G
Files withRICOH KK10
Top patents by PatentIndex Score
10 records- 0196US6118951AImage forming apparatus and toner replenishing device thereforRICOH KK·Filed 1998·Granted Sep 12, 2000·131 cites·40 claims
- 0295US6091912ATower supplying device and image forming apparatus using same toner supplying deviceRICOH KK·Filed 1999·Granted Jul 18, 2000·104 cites·18 claims
- 0394US5950062AToner sorting device for separating reusable toner from used toner and image forming apparatus using the same deviceRICOH KK·Filed 1998·Granted Sep 7, 1999·84 cites·66 claims
- 0493US6151471AToner supplying device, method and image forming apparatus using the same toner supplying device or methodRICOH KK·Filed 1999·Granted Nov 21, 2000·69 cites·53 claims
- 0593US5909609AImage forming apparatus with provisions for supplying toner thereinRICOH KK·Filed 1997·Granted Jun 1, 1999·84 cites·28 claims
- 0689US6097903AToner supplying device, toner container therefor and image forming apparatus using same toner supplying device and toner containerRICOH KK·Filed 1998·Granted Aug 1, 2000·53 cites·92 claims
- 0787US5202732ADeveloping device for image forming equipmentRICOH KK·Filed 1992·Granted Apr 13, 1993·38 cites·14 claims
- 0862US5414499ADeveloping device for image forming apparatus having improved air/toner filteringRICOH KK·Filed 1993·Granted May 9, 1995·13 cites·12 claims
- 0954US5260749AToner cartridgeRICOH KK·Filed 1991·Granted Nov 9, 1993·10 cites·9 claims
- 1032US4982223ADeveloper guide for preventing developer from entering gap between developing sleevesRICOH KK·Filed 1989·Granted Jan 1, 1991·2 cites·5 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →