Assignee
SACHEM INC
US54 patents
Top patents by PatentIndex Score
US5286354AFeb 15, 1994
Method for preparing organic and inorganic hydroxides and alkoxides by electrolysis
SACHEM INC121 citations93
US6087017AJul 11, 2000
Corrosion resistant coating for aluminum and aluminum alloys
SACHEM INC23 citations92
US5447610ASep 5, 1995
Electrolytic conversion of nitrogen oxides to hydroxylamine and hydroxylammonium salts
SACHEM INC20 citations92
US5951845ASep 14, 1999
Process for recovering organic hydroxides from waste solutions
SACHEM INC19 citations91
US5868916AFeb 9, 1999
Process for recovering organic hydroxides from waste solutions
SACHEM INC18 citations91
US5709789AJan 20, 1998
Electrochemical conversion of nitrogen containing gas to hydroxylamine and hydroxylammonium salts
SACHEM INC40 citations91
US5575901ANov 19, 1996
Process for preparing organic and inorganic hydroxides or alkoxides or ammonia or organic amines from the corresponding salts by electrolysis
SACHEM INC51 citations91
US5389211AFeb 14, 1995
Method for producing high purity hydroxides and alkoxides
SACHEM INC82 citations91
US6207039B1Mar 27, 2001
Process for recovering onium hydroxides or onium salts from solutions containing onium compounds using electrochemical ion exchange
SACHEM INC22 citations90
US7053232B2May 30, 2006
Lewis acid ionic liquids
SACHEM INC20 citations89
US6235162B1May 22, 2001
Ultrapure hydroxylamine compound solutions and process of making same
SACHEM INC22 citations89
US5968338AOct 19, 1999
Process for recovering onium hydroxides from solutions containing onium compounds
SACHEM INC40 citations89
US5910237AJun 8, 1999
Process for recovering organic hydroxides from waste solutions
SACHEM INC23 citations88
US7192910B2Mar 20, 2007
Cleaning solutions and etchants and methods for using same
SACHEM INC22 citations86
US6024855AFeb 15, 2000
Electrosynthesis of hydroxylammonium salts and hydroxylamine using a mediator
SACHEM INC34 citations86
US5259888ANov 9, 1993
Process for cleaning quartz and silicon surfaces
SACHEM INC64 citations85
US5853555ADec 29, 1998
Synthesis of onium hydroxides from onium salts
SACHEM INC19 citations82
US9120846B2Sep 1, 2015
Neutral zwitterionic displacer molecules for hydrophobic displacement chromatography
SACHEM INC10 citations80
US7994062B2Aug 9, 2011
Selective silicon etch process
SACHEM INC18 citations80
US6508940B1Jan 21, 2003
Process for recovering onium hydroxides from solutions containing onium compounds
SACHEM INC13 citations79
US6217743B1Apr 17, 2001
Process for recovering organic hydroxides from waste solutions
SACHEM INC17 citations79
US6165341ADec 26, 2000
Catalytic film, methods of making the catalytic films, and electrosynthesis of compounds using the catalytic film
SACHEM INC7 citations74
US5753097AMay 19, 1998
Process for purifying hydroxide compounds
SACHEM INC14 citations73
US5833832ANov 10, 1998
Preparation of onium hydroxides in an electrochemical cell
SACHEM INC13 citations72
US5281311AJan 25, 1994
Process for reducing the acid content of hydroxylamine salt solutions and for preparing hydroxylamines from hydroxylamine salts
SACHEM INC16 citations72
US10710891B1Jul 14, 2020
Morpholinium-based quaternary ammonium cation and AEI type zeolite made therewith
SACHEM INC4 citations71
US6991718B2Jan 31, 2006
Electrochemical process for producing ionic liquids
SACHEM INC8 citations71
US6849688B2Feb 1, 2005
Polymer grafted support polymers
SACHEM INC11 citations66
US5709790AJan 20, 1998
Electrochemical process for purifying hydroxide compounds
SACHEM INC5 citations62
US5904823AMay 18, 1999
Methods of purifying hydroxylamine solutions and converting hydroxylamine salts to hydroxylamine
SACHEM INC4 citations61
US5843318ADec 1, 1998
Methods of purifying hydroxlamine solutions and separating hydroxylamine from hydroxlamine salts
SACHEM INC3 citations61
US5576459ANov 19, 1996
Quaternary nitrogen or phosphorus chirates
SACHEM INC4 citations59
US12509546B2Dec 30, 2025
Strong binding metal-chelating resins
SACHEM INC0 citations56
US12331155B2Jun 17, 2025
Strong binding metal-chelating resins using macrocycle molecules
SACHEM INC0 citations56
US12180328B2Dec 31, 2024
Strong binding metal-chelating resins
SACHEM INC0 citations56
US7214806B2May 8, 2007
Synthetic multiple quaternary ammonium salts
SACHEM INC4 citations55
US7632409B2Dec 15, 2009
Cation-exchange displacement chromatography process and cationic organic compounds for use as displacer compounds in cation-exchange displacement chromatography process
SACHEM INC3 citations52
US5259934ANov 9, 1993
Process for removing acid from a hydroxylamine salt solution containing excess acid
SACHEM INC1 citations51
US11201321B1Dec 14, 2021
LimMOxFy shell formation on cathode ceramic particle for Li ion battery through onium metal oxide fluoride precursor
SACHEM INC1 citations50
US10843929B2Nov 24, 2020
Process for SSZ-39 synthesis using modified reaction composition
SACHEM INC0 citations50
US9650595B2May 16, 2017
Quaternary ammonium hydroxides
SACHEM INC0 citations50
US7867471B2Jan 11, 2011
Process for preparing advanced ceramic powders using onium dicarboxylates
SACHEM INC3 citations49
US9634321B2Apr 25, 2017
Oxide shell formation on inorganic substrate via oxidative polyoxoanion salt deposition
SACHEM INC0 citations48
US9634318B2Apr 25, 2017
Oxide shell formation on inorganic substrates via lithium polyoxoanion salt deposition
SACHEM INC0 citations48
US8361779B2Jan 29, 2013
Buffer compounds
SACHEM INC2 citations48
US9981879B2May 29, 2018
Gel method for preparation of ceramic material
SACHEM INC0 citations46
US9115050B2Aug 25, 2015
Process for improved recovery of onium hydroxide from compositions containing process residues
SACHEM INC0 citations46
US7976638B2Jul 12, 2011
High negative zeta potential polyhedral silsesquioxane composition and method for damage free semiconductor wet clean
SACHEM INC0 citations46
US11884753B2Jan 30, 2024
Green cationization agent
SACHEM INC0 citations45
US7572379B2Aug 11, 2009
Removal of metal ions from onium hydroxides and onium salt solutions
SACHEM INC0 citations42
Showing the top 50 of 54 patents by PatentIndex Score.