Inventor · disambiguated record
Kouji Ishigaki
Also filed as: ISHIGAKI KOUJI
16 granted patents·1 pending application·652 citations·filing 1989–2021
95Inventor score
Top patents by PatentIndex Score
17 records- 0191US6160969AImage forming apparatus with a voltage applying unit for image transferRICOH KK·Filed 1998·Granted Dec 12, 2000·57 cites·27 claims
- 0287US5751854AOriginal-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination systemRICOH KK·Filed 1996·Granted May 12, 1998·181 cites·4 claims
- 0387US5659628ASpecial-document discriminating apparatus and managing system for image forming apparatus having a special-document discriminating functionRICOH KK·Filed 1996·Granted Aug 19, 1997·93 cites·6 claims
- 0486US5057867AImage forming apparatus which corrects the image forming factors in response to density sensing means and duration of inactive stateRICOH KK·Filed 1989·Granted Oct 15, 1991·28 cites·6 claims
- 0579US5652803ASpecial-document discriminating apparatus and managing system for image forming apparatus having a special-document discriminating functionRICOH KK·Filed 1996·Granted Jul 29, 1997·56 cites·5 claims
- 0677US6272248B1Original-discrimination system for discriminating special document, and image forming apparatus, image processing apparatus and duplicator using the original-discrimination systemRICOH KK·Filed 1998·Granted Aug 7, 2001·113 cites·2 claims
- 0770US5341196AImage forming equipment using a toner cartridgeRICOH KK·Filed 1991·Granted Aug 23, 1994·18 cites·36 claims
- 0864US5184184AImage forming apparatusRICOH KK·Filed 1992·Granted Feb 2, 1993·25 cites·20 claims
- 0962US4963938AToner cartridge for an image forming apparatusRICOH KK·Filed 1989·Granted Oct 16, 1990·11 cites·7 claims
- 1057US5258248AImage density control method for an image forming apparatusRICOH KK·Filed 1992·Granted Nov 2, 1993·12 cites·4 claims
- 1155US5245390ADevice for adjusting output of image density sensor incorporated in image forming equipmentRICOH KK·Filed 1991·Granted Sep 14, 1993·21 cites·3 claims
- 1253US5321466AImage forming equipment with reserve mode to prevent unauthorized cancellation of pending jobRICOH KK·Filed 1992·Granted Jun 14, 1994·8 cites·3 claims
- 1352US5122837AToner cartridge for an image forming apparatusRICOH KK·Filed 1990·Granted Jun 16, 1992·8 cites·10 claims
- 1448US5265855ACopier with document support moving meansRICOH KK·Filed 1991·Granted Nov 30, 1993·10 cites·6 claims
- 1548US5045883AImage density control method using exclusive patterns for an image forming apparatusRICOH KK·Filed 1989·Granted Sep 3, 1991·7 cites·7 claims
- 1647US2023058760A1Program, information processing method, and information processing deviceMIZKAN HOLDINGS CO LTD·Filed 2021·Application pending·0 cites
- 1735US5028960AImage density control method for an image forming apparatusRICOH KK·Filed 1990·Granted Jul 2, 1991·4 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →