Assignee
STELLA CHEMIFA KK
JP·14 granted patents·1 pending application·124 citations·filing 1997–2009
Top patents by PatentIndex Score
15 records- 0179US7268256B2Method of purifying quaternary alkyl ammonium salt and quaternary alkyl ammonium saltSTELLA CHEMIFA KK·Filed 2003·Granted Sep 11, 2007·9 cites·9 claims
- 0272US6585910B1EtchantSTELLA CHEMIFA KK·Filed 1997·Granted Jul 1, 2003·35 cites·2 claims
- 0364US6514474B1Method of purifying lithium hexafluorosphateSTELLA CHEMIFA KK·Filed 1999·Granted Feb 4, 2003·30 cites·5 claims
- 0462US6955795B2Method for producing lithium hexafluorophosphateSTELLA CHEMIFA KK·Filed 2000·Granted Oct 18, 2005·4 cites·10 claims
- 0561US6905606B1Method of removing calcium from water containing calcium hydrogen carbonate in high concentrationSTELLA CHEMIFA KK·Filed 2000·Granted Jun 14, 2005·8 cites·5 claims
- 0660US6666973B1Method 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
- 0759US2009298295A1Method for treating surface of a glass substrateSTELLA CHEMIFA KK·Filed 2009·Application pending·0 cites
- 0857US6884403B2Method of purifying lithium hexafluorophosphateSTELLA CHEMIFA KK·Filed 2003·Granted Apr 26, 2005·1 cites·5 claims
- 0956US7033563B2Method for reducing oxygen component and carbon component in fluorideSTELLA CHEMIFA KK·Filed 2002·Granted Apr 25, 2006·1 cites·13 claims
- 1052US6896866B2Method for purification of tungsten hexafluorideSTELLA CHEMIFA KK·Filed 2000·Granted May 24, 2005·2 cites·10 claims
- 1151US7214362B2Purification method for producing high purity niobium compound and/or tantalum compoundSTELLA CHEMIFA KK·Filed 2003·Granted May 8, 2007·2 cites·16 claims
- 1251US7175823B2Purification method for producing high purity niobium compound and/or tantalum compoundSTELLA CHEMIFA KK·Filed 2003·Granted Feb 13, 2007·2 cites·6 claims
- 1348US6027571ASurface treatment for micromachiningSTELLA CHEMIFA KK·Filed 1997·Granted Feb 22, 2000·14 cites·8 claims
- 1439US6797194B1Surface treating for micromachining and method for surface treatmentSTELLA CHEMIFA KK·Filed 1999·Granted Sep 28, 2004·6 cites·6 claims
- 1529US6699603B1Stainless steel having passive fluoride film formed thereon and equipment manufactured therefromSTELLA CHEMIFA KK·Filed 1998·Granted Mar 2, 2004·2 cites·7 claims
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →