Inventor · disambiguated record
Tatsuo Ohta
Also filed as: HARADA YOSHIAKI · OHTA TATSUO · YAMAZAKI TAKAO
25 granted patents·3 pending applications·370 citations·filing 1977–2006
96Inventor score
Files withKONISHIROKU PHOTO IND14KONICA MINOLTA OPTO INC10DONALDSON CO INC1KONICA CORP1KONICA OPTO CORP1
Top patents by PatentIndex Score
28 records- 0190US6813096B2Optical lens and optical information recording and reproducing apparatus equipped therewithKONISHIROKU PHOTO IND·Filed 2002·Granted Nov 2, 2004·45 cites·18 claims
- 0288US4835061AConductive laminateKONISHIROKU PHOTO IND·Filed 1985·Granted May 30, 1989·70 cites·8 claims
- 0387US4526132AEvaporatorKONISHIROKU PHOTO IND·Filed 1983·Granted Jul 2, 1985·28 cites·24 claims
- 0485US7161744B2Objective lens and optical pickup apparatusKONICA MINOLTA OPTO INC·Filed 2005·Granted Jan 9, 2007·6 cites·15 claims
- 0581US7554736B2Objective lens and optical pickup apparatusKONICA MINOLTA OPTO INC·Filed 2005·Granted Jun 30, 2009·4 cites·20 claims
- 0679US7715302B2Optical element and optical pickup apparatusKONICA MINOLTA OPTO INC·Filed 2005·Granted May 11, 2010·11 cites·36 claims
- 0776US4719152ATransparent conductive layer built-up materialKONISHIROKU PHOTO IND·Filed 1985·Granted Jan 12, 1988·38 cites·11 claims
- 0876US4585689ATransparent conductive optical device and a process for the production thereofKONISHIROKU PHOTO IND·Filed 1984·Granted Apr 29, 1986·17 cites·9 claims
- 0970US4189724AElectric restriction indicator with a contactless switch device for indicating a restriction in filter elementsDONALDSON CO INC·Filed 1978·Granted Feb 19, 1980·25 cites·15 claims
- 1069US6903512B2Half mirror film producing method and optical element comprising a half mirror filmKONISHIROKU PHOTO IND·Filed 2002·Granted Jun 7, 2005·10 cites·20 claims
- 1167US6104534AAntireflection coating with electromagnetic wave shielding effect and optical member having the antireflection coatingKONISHIROKU PHOTO IND·Filed 1998·Granted Aug 15, 2000·31 cites·6 claims
- 1266US7602679B2Optical lens and information recording and reproducing deviceKONICA MINOLTA OPTO INC·Filed 2004·Granted Oct 13, 2009·7 cites·37 claims
- 1365US4157219AMulti-color electro-static image liquid development apparatusKONISHIROKU PHOTO IND·Filed 1977·Granted Jun 5, 1979·11 cites·8 claims
- 1465US4102306ADeveloping roller and rinsing deviceKONISHIROKU PHOTO IND·Filed 1977·Granted Jul 25, 1978·11 cites·8 claims
- 1562US7803455B2Optical element and optical pickup apparatusKONICA MINOLTA OPTO INC·Filed 2006·Granted Sep 28, 2010·3 cites·17 claims
- 1655US7085219B2Optical lens and optical information recording and reproducing apparatusKONICA OPTO CORP·Filed 2003·Granted Aug 1, 2006·4 cites·24 claims
- 1754US7682676B2Optical element and optical pickup deviceKONICA MINOLTA OPTO INC·Filed 2005·Granted Mar 23, 2010·1 cites·7 claims
- 1854US7599119B2Antireflection coating, optical element, and optical transceiver moduleKONICA MINOLTA OPTO INC·Filed 2006·Granted Oct 6, 2009·1 cites·37 claims
- 1951US5920431AOptical member having antireflection film thereonKONISHIROKU PHOTO IND·Filed 1997·Granted Jul 6, 1999·16 cites·26 claims
- 2048US7079323B2Surface treatment method and optical partKONICA CORP·Filed 2003·Granted Jul 18, 2006·4 cites·22 claims
- 2148US2005068456A1Image pickup device and portable terminalKONICA MINOLTA OPTO INC·Filed 2004·Application pending·0 cites
- 2245US2005109616A1Sputtering apparatusKONICA MINOLTA OPTO INC·Filed 2004·Application pending·0 cites
- 2341US6771583B2Optical componentKONISHIROKU PHOTO IND·Filed 2001·Granted Aug 3, 2004·0 cites·7 claims
- 2441US6319598B1Electromagnetic wave attenuating transparent memberKONISHIROKU PHOTO IND·Filed 1999·Granted Nov 20, 2001·9 cites·32 claims
- 2541US2005018297A1Optical component and optical pickup apparatusKONICA MINOLTA OPTO INC·Filed 2004·Application pending·0 cites
- 2640US4793923AGradient density filter mediumTOYO ROKI SEIZO KK·Filed 1988·Granted Dec 27, 1988·10 cites·9 claims
- 2737US4591544AMetal image forming materials with light sensitive resin layer and oblique angle deposited metal underlayerKONISHIROKU PHOTO IND·Filed 1985·Granted May 27, 1986·7 cites·30 claims
- 2825US4287278ATwo superimposed ion current formed images using photoconductive screen gives wider potential range for gradation control in electrophotographyKONISHIROKU PHOTO IND·Filed 1980·Granted Sep 1, 1981·1 cites·6 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →