Inventor · disambiguated record
Hirohisa Kikuyama
Also filed as: KIKUYAMA HIROHISA
32 granted patents·13 pending applications·578 citations·filing 1987–2013
97Inventor score
Files withSTELLA CHEMIFA KK15STELLA CHEMIFA CORP7KIKUYAMA HIROHISA5HASHIMOTO CHEMICAL IND4FUKUDA TSUGUO3
Top patents by PatentIndex Score
45 records- 0195US5009963AMetal material with film passivated by fluorination and apparatus composed of the metal materialOHMI TADAHIRO·Filed 1989·Granted Apr 23, 1991·71 cites·6 claims
- 0293US7740825B2Method for forming a carbon nanotube aggregateSTELLA CHEMIFA CORP·Filed 2005·Granted Jun 22, 2010·29 cites·15 claims
- 0390US4795582ASurface treating composition for micro processingHASHIMOTO CHEMICAL IND·Filed 1987·Granted Jan 3, 1989·93 cites·6 claims
- 0479US7268256B2Method of purifying quaternary alkyl ammonium salt and quaternary alkyl ammonium saltSTELLA CHEMIFA KK·Filed 2003·Granted Sep 11, 2007·9 cites·9 claims
- 0577US5714407AEtching agent, electronic device and method of manufacturing the deviceFRONTEC INC·Filed 1995·Granted Feb 3, 1998·53 cites·18 claims
- 0674US5277835ASurface treatment agent for fine surface treatmentHASHIMOTO CHEMICAL IND·Filed 1993·Granted Jan 11, 1994·51 cites·2 claims
- 0772US6585910B1EtchantSTELLA CHEMIFA KK·Filed 1997·Granted Jul 1, 2003·35 cites·2 claims
- 0868US5149378ATungsten film forming apparatusHASHIMOTO KASEI KOGYO KK·Filed 1990·Granted Sep 22, 1992·53 cites·20 claims
- 0968US5073232AMethod of anhydrous hydrogen fluoride etchingHASHIMOTO CHEMICAL IND·Filed 1989·Granted Dec 17, 1991·29 cites·2 claims
- 1065US5100495ADry etching apparatus with diluted anhydrous hydrogen fluoride gas generatorHASHIMOTO CHEMICAL IND·Filed 1991·Granted Mar 31, 1992·33 cites·2 claims
- 1164US6514474B1Method of purifying lithium hexafluorosphateSTELLA CHEMIFA KK·Filed 1999·Granted Feb 4, 2003·30 cites·5 claims
- 1262US8501138B2Production method of high purity silver tetrafluoroborateKIKUYAMA HIROHISA·Filed 2006·Granted Aug 6, 2013·1 cites·20 claims
- 1362US8066898B2Surface treatment solution for the fine surface processing of a glass substrate containing multiple ingredientsKIKUYAMA HIROHISA·Filed 2008·Granted Nov 29, 2011·1 cites·16 claims
- 1462US6955795B2Method for producing lithium hexafluorophosphateSTELLA CHEMIFA KK·Filed 2000·Granted Oct 18, 2005·4 cites·10 claims
- 1561US7413606B2Method for producing crystal of fluorideSTELLA CHEMIFA CORP·Filed 2004·Granted Aug 19, 2008·4 cites·11 claims
- 1661US6905606B1Method of removing calcium from water containing calcium hydrogen carbonate in high concentrationSTELLA CHEMIFA KK·Filed 2000·Granted Jun 14, 2005·8 cites·5 claims
- 1760US6666973B1Method for fixing fluorine and phosphorus in waste water containing fluorophosphoric acid-derived compound to remove themSTELLA CHEMIFA KK·Filed 2000·Granted Dec 23, 2003·8 cites·15 claims
- 1859US2009298295A1Method for treating surface of a glass substrateSTELLA CHEMIFA KK·Filed 2009·Application pending·0 cites
- 1957US6884403B2Method of purifying lithium hexafluorophosphateSTELLA CHEMIFA KK·Filed 2003·Granted Apr 26, 2005·1 cites·5 claims
- 2057US6821452B2EtchantFiled 2003·Granted Nov 23, 2004·5 cites·6 claims
- 2156US7727415B2Fine treatment agent and fine treatment method using sameSTELLA CHEMIFA CORP·Filed 2005·Granted Jun 1, 2010·1 cites·15 claims
- 2256US7033563B2Method for reducing oxygen component and carbon component in fluorideSTELLA CHEMIFA KK·Filed 2002·Granted Apr 25, 2006·1 cites·13 claims
- 2356US5803956ASurface treating composition for micro processingHASHIMOTO CHEMICAL COMPANY LTD·Filed 1996·Granted Sep 8, 1998·23 cites·4 claims
- 2452US6896866B2Method for purification of tungsten hexafluorideSTELLA CHEMIFA KK·Filed 2000·Granted May 24, 2005·2 cites·10 claims
- 2551US7214362B2Purification method for producing high purity niobium compound and/or tantalum compoundSTELLA CHEMIFA KK·Filed 2003·Granted May 8, 2007·2 cites·16 claims
- 2651US7175823B2Purification method for producing high purity niobium compound and/or tantalum compoundSTELLA CHEMIFA KK·Filed 2003·Granted Feb 13, 2007·2 cites·6 claims
- 2750US6632293B1Highly activated hydrogen containing material and method for producing the materialJAPAN STEEL WORKS LTD·Filed 2000·Granted Oct 14, 2003·3 cites·5 claims
- 2849US2007112183A1Chitin oligomer composition and/or chitosan oligomer composition and processes for preparation thereofSTELLA CHEMIFA CORP·Filed 2004·Application pending·0 cites
- 2948US8333838B2Method for producing fluoride crystalFUKUDA TSUGUO·Filed 2010·Granted Dec 18, 2012·0 cites·8 claims
- 3048US6027571ASurface treatment for micromachiningSTELLA CHEMIFA KK·Filed 1997·Granted Feb 22, 2000·14 cites·8 claims
- 3144US2007178040A1Tantalum oxide and/or niobium oxide and method for preparation thereofSTELLA CHEMIFA CORP·Filed 2005·Application pending·0 cites
- 3241US2007215835A1Surface treating fluid for fine processing of multi-component glass substrateKIKUYAMA HIROHISA·Filed 2002·Application pending·0 cites
- 3341US2007029519A1Surface treating solution for fine processing of glass base plate having a plurality of componentsKIKUYAMA HIROHISA·Filed 2002·Application pending·0 cites
- 3441US2004209481A1Surface treating for micromachining and surface treatment methodFiled 2004·Application pending·0 cites
- 3541US2007227567A1Processing Liquid and Processing Method for Semiconductor Device, and Semiconductor Manufacturing ApparatusSTELLA CHEMIFA CORP·Filed 2005·Application pending·0 cites
- 3640US2007189957A1Method for producing tantalum oxide and/or niobium oxide in form of hollow particleKIKUYAMA HIROHISA·Filed 2005·Application pending·0 cites
- 3739US7498579B2Scintillator and radiation detector, and radiation inspecting deviceSTELLA CHEMIFA CORP·Filed 2004·Granted Mar 3, 2009·0 cites·12 claims
- 3839US6797194B1Surface treating for micromachining and method for surface treatmentSTELLA CHEMIFA KK·Filed 1999·Granted Sep 28, 2004·6 cites·6 claims
- 3938US2007056508A1Apparatus for producing fluoride crystalFUKUDA TSUGUO·Filed 2004·Application pending·0 cites
- 4038US2007034139A1Method for analyzing impurities (color centers) of fluoride and process for producing material for growing single crystalFUKUDA TSUGUO·Filed 2004·Application pending·0 cites
- 4138US2003209296A1Highly activated hydrogen containing material and method for producing the materialJAPAN STEEL WORKS LTD·Filed 2003·Application pending·0 cites
- 4236US2016064213A1Method for treating inner wall surface of micro-vacancyUNIV TOHOKU·Filed 2013·Application pending·0 cites
- 4335US2005123459A1Method of purifying niobium compound and/or tantalum compoundFiled 2003·Application pending·0 cites
- 4429US6699603B1Stainless steel having passive fluoride film formed thereon and equipment manufactured therefromSTELLA CHEMIFA KK·Filed 1998·Granted Mar 2, 2004·2 cites·7 claims
- 4528US6258411B1Industrial material with fluorine passivated film and process of manufacturing the sameMITSUBISI ALUMINUM COMPANY LTD·Filed 1999·Granted Jul 10, 2001·4 cites·7 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →