Inventor · disambiguated record
Naohiko Ukawa
Also filed as: UKAWA NAOHIKO
41 granted patents·624 citations·filing 1975–2013
98Inventor score
Top patents by PatentIndex Score
41 records- 0190US4314345AControlling the injection of ammonia in a dry type exhaust gas denitration processMITSUBISHI HEAVY IND LTD·Filed 1980·Granted Feb 2, 1982·66 cites·4 claims
- 0281US6656440B2Exhaust gas desulfurizing method and system thereforMITSUBISHI HEAVY IND LTD·Filed 2001·Granted Dec 2, 2003·28 cites·10 claims
- 0380US6863875B1Flue gas treating system and processMITSUBISHI HEAVY IND LTD·Filed 2000·Granted Mar 8, 2005·31 cites·17 claims
- 0479US4302431AProcess for controlling nitrogen oxides in exhaust gases and apparatus thereforMITSUBISHI HEAVY IND LTD·Filed 1980·Granted Nov 24, 1981·36 cites·2 claims
- 0575US6517792B2Combustion exhaust gas treatment systemMITSUBISHI HEAVY IND LTD·Filed 2001·Granted Feb 11, 2003·9 cites·7 claims
- 0674US6051055AExhaust gas desulfurization systemMITSUBISHI HEAVY IND LTD·Filed 1997·Granted Apr 18, 2000·43 cites·2 claims
- 0773US8420037B2Air pollution control system and air pollution control methodIIJIMA MASAKI·Filed 2011·Granted Apr 16, 2013·3 cites·15 claims
- 0872US5756052AFlue gas treatment systemMITSUBISHI HEAVY IND LTD·Filed 1996·Granted May 26, 1998·46 cites·40 claims
- 0970US6203598B1Flue gas treating process and systemMITSUBISHI HEAVY IND LTD·Filed 1999·Granted Mar 20, 2001·40 cites·9 claims
- 1069US6107532AProcess and system for converting plastics waste into oilTOHOKU ELECTRIC POWER CO·Filed 1998·Granted Aug 22, 2000·23 cites·7 claims
- 1163US5395561AMethod of producing solid moldings from a by-product of wet limestone-gypsum desulfurization of flue gasMITSUBISHI HEAVY IND LTD·Filed 1992·Granted Mar 7, 1995·17 cites·8 claims
- 1262US6029100AMethod for controlling oxidation in flue gas desulfurizationMITSUBISHI HEAVY IND LTD·Filed 1997·Granted Feb 22, 2000·28 cites·6 claims
- 1362US5151248APd-added austenitic stainless steel for use for high temperature concentrated sulfuric acidMITSUBISHI HEAVY IND LTD·Filed 1991·Granted Sep 29, 1992·17 cites·2 claims
- 1462US5132027AMethod and apparatus for treating absorbent solution slurry containing fly ashMITSUBISHI HEAVY IND LTD·Filed 1990·Granted Jul 21, 1992·24 cites·6 claims
- 1561US6773680B2Combustion exhaust gas treatment systemMITSUBISHI HEAVY IND LTD·Filed 2002·Granted Aug 10, 2004·3 cites·5 claims
- 1661US5605655AGas-liquid contacting apparatusMITSUBISHI HEAVY IND LTD·Filed 1995·Granted Feb 25, 1997·25 cites·2 claims
- 1760US4973570AMethod for producing a parallel gas flow type catalyst for oxidizing sulfurous acid gasMITSUBISHI HEAVY IND LTD·Filed 1989·Granted Nov 27, 1990·16 cites·4 claims
- 1858US5246678AHigh-performance flue-gas desulfurization processMITSUBISHI HEAVY IND LTD·Filed 1992·Granted Sep 21, 1993·11 cites·4 claims
- 1958US5209905AWet-type exhaust gas desulfurization system having a means for supplying airMITSUBISHI HEAVY IND LTD·Filed 1991·Granted May 11, 1993·11 cites·7 claims
- 2050US6096279AFlue gas treating process and systemMITSUBISHI HEAVY IND LTD·Filed 1998·Granted Aug 1, 2000·17 cites·8 claims
- 2148US9789438B2Air pollution control apparatusMITSUBISHI HEAVY IND LTD·Filed 2013·Granted Oct 17, 2017·0 cites·7 claims
- 2248US5616290AGas-liquid contacting apparatusMITSUBISHI HEAVY IND LTD·Filed 1996·Granted Apr 1, 1997·12 cites·1 claims
- 2346US5192518AMethod for desulfurizing exhaust smokeMITSUBISHI HEAVY IND LTD·Filed 1991·Granted Mar 9, 1993·12 cites·2 claims
- 2446US4663724AMethod for the continuous determination of the concentration of a carbonate and a sulfite in a liquidMITSUBISHI HEAVY IND LTD·Filed 1984·Granted May 5, 1987·9 cites·1 claims
- 2545US5266286AFlue gas desulfurization processMITSUBISHI HEAVY IND LTD·Filed 1992·Granted Nov 30, 1993·12 cites·3 claims
- 2644US5284557AMethod for desulfurizing exhaust smokeMITSUBISHI HEAVY IND LTD·Filed 1991·Granted Feb 8, 1994·10 cites·5 claims
- 2744US4632810AMethod for treating waste gas to separate and recover gypsum and dust thereinMITSUBISHI HEAVY IND LTD·Filed 1985·Granted Dec 30, 1986·11 cites·2 claims
- 2843US5295400ASlurry sampling device and methodMITSUBISHI HEAVY IND LTD·Filed 1991·Granted Mar 22, 1994·11 cites·14 claims
- 2942US5976376ASewage treatment processMITSUBISHI HEAVY IND LTD·Filed 1996·Granted Nov 2, 1999·9 cites·4 claims
- 3041US6740297B2Combustion exhaust gas treatment systemMITSUBISHI HEAVY IND LTD·Filed 2002·Granted May 25, 2004·0 cites·3 claims
- 3139US5034028AExhaust gas treating methodMITSUBISHI HEAVY IND LTD·Filed 1989·Granted Jul 23, 1991·8 cites·2 claims
- 3237US4038367AProcess for the removal of SOx and NOx from waste gases using alkali metal or alkaline earth metal iodideMITSUBISHI HEAVY IND LTD·Filed 1975·Granted Jul 26, 1977·6 cites·7 claims
- 3336US5433936AFlue gas desulfurization processMITSUBISHI HEAVY IND LTD·Filed 1993·Granted Jul 18, 1995·7 cites·9 claims
- 3435US6277327B1Method for the anticorrosive treatment of waste plastics treating equipmentTOHOKU ELECTRIC POWER CO·Filed 1999·Granted Aug 21, 2001·2 cites·4 claims
- 3535US4533531AExhaust fume desulfurization processMITSUBISHI HEAVY IND LTD·Filed 1984·Granted Aug 6, 1985·4 cites·12 claims
- 3634US5662794ASolid-liquid separator and wet flue gas desulfurization apparatusMITSUBISHI HEAVY IND LTD·Filed 1995·Granted Sep 2, 1997·5 cites·5 claims
- 3734US4038368AProcess for removing oxides of nitrogen and sulfur from exhaust gasesMITSUBISHI HEAVY IND LTD·Filed 1975·Granted Jul 26, 1977·5 cites·9 claims
- 3833US6511636B1Combustion exhaust gas treatment systemMITSUBISHI HEAVY IND LTD·Filed 1999·Granted Jan 28, 2003·2 cites·11 claims
- 3931US6113863ACombustion exhaust gas treatment systemMITSUBISHI HEAVY IND LTD·Filed 1996·Granted Sep 5, 2000·0 cites·7 claims
- 4031US5221298AWet exhaust gas desulfurization apparatus and methodMITSUBISHI HEAVY IND LTD·Filed 1992·Granted Jun 22, 1993·2 cites·14 claims
- 4129US4420465AProcess for desulfurizing an exhaust gasMITSUBISHI HEAVY IND LTD·Filed 1982·Granted Dec 13, 1983·3 cites·3 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →