Inventor
KIKUYAMA HIROHISA
JP32 patents
⚠️ This page may combine multiple inventors who share the name “KIKUYAMA HIROHISA”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
STELLA CHEMIFA KK
14 patentsUS6585910B1Jul 1, 2003
Etchant
STELLA CHEMIFA KK35 citations92
US6514474B1Feb 4, 2003
Method of purifying lithium hexafluorosphate
STELLA CHEMIFA KK30 citations90
US7268256B2Sep 11, 2007
Method of purifying quaternary alkyl ammonium salt and quaternary alkyl ammonium salt
STELLA CHEMIFA KK9 citations73
US6797194B1Sep 28, 2004
Surface treating for micromachining and method for surface treatment
STELLA CHEMIFA KK6 citations73
US6027571AFeb 22, 2000
Surface treatment for micromachining
STELLA CHEMIFA KK14 citations73
US6905606B1Jun 14, 2005
Method of removing calcium from water containing calcium hydrogen carbonate in high concentration
STELLA CHEMIFA KK8 citations72
US6666973B1Dec 23, 2003
Method for fixing fluorine and phosphorus in waste water containing fluorophosphoric acid-derived compound to remove them
STELLA CHEMIFA KK8 citations72
US6896866B2May 24, 2005
Method for purification of tungsten hexafluoride
STELLA CHEMIFA KK2 citations61
US7214362B2May 8, 2007
Purification method for producing high purity niobium compound and/or tantalum compound
STELLA CHEMIFA KK2 citations60
US7175823B2Feb 13, 2007
Purification method for producing high purity niobium compound and/or tantalum compound
STELLA CHEMIFA KK2 citations60
US6699603B1Mar 2, 2004
Stainless steel having passive fluoride film formed thereon and equipment manufactured therefrom
STELLA CHEMIFA KK2 citations60
US6955795B2Oct 18, 2005
Method for producing lithium hexafluorophosphate
STELLA CHEMIFA KK4 citations57
US7033563B2Apr 25, 2006
Method for reducing oxygen component and carbon component in fluoride
STELLA CHEMIFA KK1 citations49
US6884403B2Apr 26, 2005
Method of purifying lithium hexafluorophosphate
STELLA CHEMIFA KK1 citations49
HASHIMOTO CHEMICAL IND
4 patentsUS5277835AJan 11, 1994
Surface treatment agent for fine surface treatment
HASHIMOTO CHEMICAL IND51 citations96
US4795582AJan 3, 1989
Surface treating composition for micro processing
HASHIMOTO CHEMICAL IND93 citations96
US5100495AMar 31, 1992
Dry etching apparatus with diluted anhydrous hydrogen fluoride gas generator
HASHIMOTO CHEMICAL IND33 citations92
US5073232ADec 17, 1991
Method of anhydrous hydrogen fluoride etching
HASHIMOTO CHEMICAL IND29 citations92
STELLA CHEMIFA CORP
4 patentsUS7740825B2Jun 22, 2010
Method for forming a carbon nanotube aggregate
STELLA CHEMIFA CORP29 citations92
US7413606B2Aug 19, 2008
Method for producing crystal of fluoride
STELLA CHEMIFA CORP4 citations61
US7727415B2Jun 1, 2010
Fine treatment agent and fine treatment method using same
STELLA CHEMIFA CORP1 citations46
US7498579B2Mar 3, 2009
Scintillator and radiation detector, and radiation inspecting device
STELLA CHEMIFA CORP0 citations46