Inventor · disambiguated record
Hirofumi Kikkawa
Also filed as: KIKKAWA HIROFUMI
20 granted patents·2 pending applications·366 citations·filing 1984–2016
95Inventor score
Files withBABCOCK HITACHI KK11BABCOCK HITACHI KABUSHIKI BAIS1BABCOCK HITACHI KASUSHIKI KAIS1HITACHI POWER SYSTEMS AMERICA1KOBAYASHI KAZUKI1
Top patents by PatentIndex Score
22 records- 0191US5648048AWet-type flue gas desulfurization plantBABCOCK HITACHI KK·Filed 1994·Granted Jul 15, 1997·101 cites·32 claims
- 0289US5028568ANiobium-doped titanium membranesWISCONSIN ALUMNI RES FOUND·Filed 1989·Granted Jul 2, 1991·47 cites·16 claims
- 0387US7833501B2Method and apparatus for treating discharge gasBABCOCK HITACHI KK·Filed 2007·Granted Nov 16, 2010·22 cites·14 claims
- 0479US4613084AProcess for producing a coal-water slurryBABCOCK HITACHI KK·Filed 1984·Granted Sep 23, 1986·27 cites·15 claims
- 0576US8167975B2Exhaust gas purifying method and apparatusSHIMAMURA JUN·Filed 2008·Granted May 1, 2012·8 cites·4 claims
- 0676US7776141B2Methods and apparatus for performing flue gas pollution control and/or energy recoveryHITACHI POWER SYSTEMS AMERICA·Filed 2007·Granted Aug 17, 2010·11 cites·16 claims
- 0775US8302388B2Exhaust gas treating method and apparatusKOBAYASHI KAZUKI·Filed 2007·Granted Nov 6, 2012·11 cites·7 claims
- 0872US5686053AWet-type flue gas desulfurization plant and method making use of a solid desulfurizing agentBABCOCK HITACHI KK·Filed 1995·Granted Nov 11, 1997·35 cites·28 claims
- 0970US5788944AWet-type flue gas desulfurization plant and method making use of a solid desulfurizing agentBABCOCK HITACHI KK·Filed 1995·Granted Aug 4, 1998·39 cites·22 claims
- 1055US4756720AProcess for producing a high concentration coal-water slurryBABCOCK HITACHI KK·Filed 1987·Granted Jul 12, 1988·11 cites·14 claims
- 1153US7651389B2Exhaust smoke-processing systemBABCOCK HITACHI KK·Filed 2003·Granted Jan 26, 2010·6 cites·5 claims
- 1248US4786289AProcess for producing a coal-water slurryBABCOCK HITACHI KK·Filed 1988·Granted Nov 22, 1988·11 cites·21 claims
- 1347US5945081AWet-type flue gas desulfurization plant and method making use of a solid desulfurizing agentBABCOCK HITACHI KK·Filed 1997·Granted Aug 31, 1999·11 cites·10 claims
- 1445US6080370AWet-type flue gas desulfurization plant and method making use of a solid desulfurizing agentBABCOCK HITACHI KK·Filed 1998·Granted Jun 27, 2000·10 cites·10 claims
- 1544US7160527B2Method for treating amonia-containing effluent waterBABCOCK HITACHI KASUSHIKI KAIS·Filed 2001·Granted Jan 9, 2007·2 cites·4 claims
- 1644US4900330AProcess for producing a high concentration coal-water slurryBABCOCK HITACHI KABUSHIKI BAIS·Filed 1987·Granted Feb 13, 1990·9 cites·18 claims
- 1741US8741245B2Carbon dioxide-absorbing solution and method of recovering carbon dioxideYOKOYAMA KOICHI·Filed 2009·Granted Jun 3, 2014·0 cites·6 claims
- 1840US8202482B2Apparatus for removing of trace of toxic substance from exhaust gas and method of operating the sameNAGAI YOSHINORI·Filed 2006·Granted Jun 19, 2012·0 cites·12 claims
- 1940US2013055937A1Flue gas desulfurization device, combustion system and combustion methodMITSUI YOSHIAKI·Filed 2010·Application pending·0 cites
- 2039US4747548AProcess for producing a high concentration coal-water slurryBABCOCK HITACHI KK·Filed 1986·Granted May 31, 1988·5 cites·53 claims
- 2139US2005047981A1Process and apparatus for treating ammonia-containing waste waterFiled 2001·Application pending·0 cites
- 2233US10232308B2Method and device for wet flue-gas desulfurizationMITSUBISHI HITACHI POWER SYS·Filed 2016·Granted Mar 19, 2019·0 cites·10 claims
Join the waitlist — get patent alerts
Get an alert when Hirofumi Kikkawa files or is granted a new patent.
We store only your email — no account needed. See our privacy policy.
Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →