Inventor · disambiguated record
Eiji Takenaka
Also filed as: TAKENAKA EIJI
28 granted patents·1,144 citations·filing 1989–2022
98Inventor score
Top patents by PatentIndex Score
28 records- 0196US5617191AToner conveyor roller and image forming apparatus having the sameRICOH KK·Filed 1995·Granted Apr 1, 1997·84 cites·11 claims
- 0295US6033818ADeveloping device for an image forming apparatusRICOH KK·Filed 1998·Granted Mar 7, 2000·53 cites·9 claims
- 0395US5845183ADeveloping device for an image forming apparatusRICOH KK·Filed 1997·Granted Dec 1, 1998·52 cites·9 claims
- 0495US5708942ADeveloping device for an image forming apparatusRICOH KK·Filed 1996·Granted Jan 13, 1998·53 cites·4 claims
- 0595US5625441ADeveloping device for an image forming apparatusRICOH KK·Filed 1996·Granted Apr 29, 1997·54 cites·9 claims
- 0694US5826144ADeveloping device for an electrophotographic recording apparatus including bias control of a toner supplying rollerRICOH KK·Filed 1996·Granted Oct 20, 1998·68 cites·7 claims
- 0794US5489747ADeveloping device for an image forming apparatusRICOH KK·Filed 1995·Granted Feb 6, 1996·73 cites·3 claims
- 0893US5697026ADeveloping device having the lengths of two toner transporting rollers and an image bearing member in specific relationshipsRICOH KK·Filed 1995·Granted Dec 9, 1997·62 cites·19 claims
- 0993US5625440ADeveloping device having seals between a toner transport roller and the toner hopper which prevent toner leakage and scatteringRICOH KK·Filed 1995·Granted Apr 29, 1997·64 cites·9 claims
- 1092US7246655B2Heat transfer deviceFUJIKURA LTD·Filed 2004·Granted Jul 24, 2007·59 cites·7 claims
- 1192US5768665AImage forming apparatus with bias control to prevent undesirable toner depositionRICOH KK·Filed 1996·Granted Jun 16, 1998·58 cites·14 claims
- 1292US5666625ADevice for electrostatically developing a latent image on an image carrierRICOH KK·Filed 1995·Granted Sep 9, 1997·62 cites·4 claims
- 1391US5879752AMethod of coating a toner conveyor rollerRICOH KK·Filed 1996·Granted Mar 9, 1999·62 cites·18 claims
- 1491US5625438AToner, and devices for electrostatically depositing a uniform application thereofRICOH KK·Filed 1995·Granted Apr 29, 1997·40 cites·8 claims
- 1591US5486909ADeveloping device for an image forming apparatusRICOH KK·Filed 1995·Granted Jan 23, 1996·56 cites·2 claims
- 1690US7540319B2Heat transfer deviceFUJIKURA LTD·Filed 2007·Granted Jun 2, 2009·18 cites·6 claims
- 1790US5552870ADeveloping device for an image forming apparatusRICOH KK·Filed 1994·Granted Sep 3, 1996·39 cites·17 claims
- 1889US5897243AElectrophotographic recording apparatus configured to switch a bias voltage in a developing unitRICOH KK·Filed 1996·Granted Apr 27, 1999·49 cites·18 claims
- 1989US5863036ASheet feeding device and image forming apparatus having the sameRICOH KK·Filed 1996·Granted Jan 26, 1999·45 cites·15 claims
- 2069US5610693ADeveloping device for an image forming apparatusRICOH KK·Filed 1994·Granted Mar 11, 1997·16 cites·35 claims
- 2162US12092675B2Evaluation device of radio communication moduleFUJIKURA LTD·Filed 2022·Granted Sep 17, 2024·0 cites·5 claims
- 2262US5617190ADeveloping device for an image forming apparatus which reduces toner consumption and wasteRICOH KK·Filed 1994·Granted Apr 1, 1997·13 cites·12 claims
- 2361US4926191AImage recording apparatus and method of carrying out initializing process in image recording apparatusRICOH KK·Filed 1989·Granted May 15, 1990·15 cites·24 claims
- 2450US5915157ASheet transport system and apparatus for an image-forming apparatus with crossing sheet transport pathsRICOH KK·Filed 1998·Granted Jun 22, 1999·14 cites·58 claims
- 2549US6131902ASheet feeding paths for apparatus with feed paths selectable to correspond to desired function of apparatusRICOH KK·Filed 1998·Granted Oct 17, 2000·14 cites·10 claims
- 2644US5623717ADeveloping device for an image forming apparatus which uses bias voltages to attract charged tonerRICOH KK·Filed 1995·Granted Apr 22, 1997·7 cites·24 claims
- 2744US5268766AFacsimile apparatus with two different sized paper supply rolls having timer/counter to choose primary supply roll to prevent curlingRICOH KK·Filed 1990·Granted Dec 7, 1993·11 cites·4 claims
- 2836US5327197AElectrophotographic apparatusRICOH KK·Filed 1993·Granted Jul 5, 1994·3 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →