Inventor · disambiguated record
Tadayoshi Nagaoka
Also filed as: NAGAOKA TADAYOSHI
35 granted patents·7 pending applications·1,208 citations·filing 1980–2003
98Inventor score
Top patents by PatentIndex Score
42 records- 0193US5476143AWell screen having slurry flow pathsNAGAOKA KK·Filed 1994·Granted Dec 19, 1995·214 cites·17 claims
- 0290US5618424ARotary drum type device for separating solid particles from a liquidNAGAOKA KK·Filed 1995·Granted Apr 8, 1997·81 cites·10 claims
- 0390US4818403ADouble cylinder screenNAGAOKA KANAAMI KK·Filed 1986·Granted Apr 4, 1989·62 cites·9 claims
- 0483US5355948APermeable isolation sectioned screenSPARLIN DERRY D·Filed 1992·Granted Oct 18, 1994·48 cites·27 claims
- 0581US4657079AScreenNAGAOKA KANAAI KABUSHIKI KAISH·Filed 1985·Granted Apr 14, 1987·50 cites·6 claims
- 0680US5787980AWell screen having a uniform outer diameterNAGAOKA KK·Filed 1994·Granted Aug 4, 1998·72 cites·14 claims
- 0779US6221320B1Device and method for holding catalyst in a radial flow reactorNAGAOKA KK·Filed 1993·Granted Apr 24, 2001·41 cites·6 claims
- 0877US5355949AWell liner with dual concentric half screensSPARLIN DERRY D·Filed 1993·Granted Oct 18, 1994·66 cites·40 claims
- 0975US6488842B2Filtering deviceFiled 1999·Granted Dec 3, 2002·44 cites·8 claims
- 1073US5768851AStructure unitFiled 1997·Granted Jun 23, 1998·51 cites·4 claims
- 1171US4578248ADistributor/collector assemblyNAGAOKA KANAAMI KK·Filed 1982·Granted Mar 25, 1986·23 cites·8 claims
- 1270US5476588AMulti-layer composite screenNAGAOKA KK·Filed 1995·Granted Dec 19, 1995·58 cites·3 claims
- 1370US4366608AMethod for manufacturing fluid contacting deviceNAGAOKA KANAAMI KK·Filed 1980·Granted Jan 4, 1983·22 cites·16 claims
- 1467US5622625AMethod of manufacturing a drumNAGAOKA KK·Filed 1996·Granted Apr 22, 1997·24 cites·1 claims
- 1565US5307984AMethod of manufacturing a selective isolation screenNAGAOKA KK·Filed 1992·Granted May 3, 1994·41 cites·9 claims
- 1664US5311942AWell screen having a protective frame for a horizontal or high-angle wellNAGAOKA KK·Filed 1992·Granted May 17, 1994·39 cites·2 claims
- 1763US7014758B2Water treatment deviceNAGAOKA TADAYOSHI·Filed 2001·Granted Mar 21, 2006·12 cites·8 claims
- 1863US6538225B1Column packing and method for manufacturing the sameFiled 2000·Granted Mar 25, 2003·4 cites·4 claims
- 1963US5415294AScreen with a surface having projections or depressionsNAGAOKA KK·Filed 1994·Granted May 16, 1995·24 cites·18 claims
- 2061US6200467B1Filtering device with rotatable backwash tubeFiled 1999·Granted Mar 13, 2001·25 cites·6 claims
- 2161US5377423ASludge dehydrating press and method for treating sludgeNAGAOKA KK·Filed 1993·Granted Jan 3, 1995·12 cites·10 claims
- 2260US6536323B2Column packing and method for manufacturing the sameFiled 2001·Granted Mar 25, 2003·3 cites·4 claims
- 2360US5450898AGravity enhanced maintenance screenFiled 1994·Granted Sep 19, 1995·22 cites·10 claims
- 2459US5069279AWell structure having a screen element with wire supporting rodsNAGAOKA KANAAMI KK·Filed 1990·Granted Dec 3, 1991·22 cites·2 claims
- 2558US5643458ASludge dehydrating press and method for treating sludgeNAGAOKA KK·Filed 1994·Granted Jul 1, 1997·12 cites·11 claims
- 2657US5858235ASludge dehydrating press having cylindrical inner screen caseNAGAOKA KK·Filed 1996·Granted Jan 12, 1999·14 cites·1 claims
- 2756US6481325B1Column packing and method for manufacturing the sameFiled 2000·Granted Nov 19, 2002·1 cites·4 claims
- 2856US6177006B1Filtering deviceFiled 1998·Granted Jan 23, 2001·21 cites·3 claims
- 2956US6070739AFiltering deviceFiled 1998·Granted Jun 6, 2000·21 cites·14 claims
- 3049US5246158AMethod of manufacturing a selective isolation screenNAGAOKA KK·Filed 1992·Granted Sep 21, 1993·22 cites·6 claims
- 3147US5705069ACentrifugal water treatment deviceHARUSUKE NAITO·Filed 1995·Granted Jan 6, 1998·15 cites·2 claims
- 3247US5673726AMethod for weaving a multi-ply fabric packing with hexagonal cellsNAGAOKA KK·Filed 1995·Granted Oct 7, 1997·11 cites·6 claims
- 3347US2002059786A1Column packing and method for manufacturing the sameFiled 2002·Application pending·0 cites
- 3444US2002073669A1Column packing and method for manufacturing the sameFiled 2002·Application pending·0 cites
- 3543US2003001292A1Column packing and method for manufacturing the sameFiled 2002·Application pending·0 cites
- 3643US2003001293A1Column packing and method for manufacturing the sameFiled 2002·Application pending·0 cites
- 3743US2003029604A1Filter-heat exchangerFiled 2002·Application pending·0 cites
- 3841US5899031APartition structure having a screenTADAYOSHI NAGAOKA·Filed 1997·Granted May 4, 1999·15 cites·5 claims
- 3941US2001042928A1Column packing and method for manufacting the sameFiled 2001·Application pending·0 cites
- 4039US2007194471A1Reactor with packing meanNAGAOKA TADAYOSHI·Filed 2003·Application pending·0 cites
- 4136US5954960ARotary drum type dehydratorNAGAOKA USA CORP·Filed 1998·Granted Sep 21, 1999·14 cites·5 claims
- 4231US5901456ADevice for measuring distance between walls of coaxial cylindrical screensFiled 1997·Granted May 11, 1999·2 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →