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| Number | Title | Issue Date |
| 7291217 | Non-toxic corrosion-protection pigments based on rare earth elements A corrosion-inhibiting pigment comprising a rare earth element and a valence stabilizer combinded to form a rare earth/valence stabilizer complex. The rare earth element is selected from cerium, terbium, praseodymium, or a combination thereof, and at least one rare ... | 11/06/2007 |
| 7005056 | Method for inhibiting corrosion of alloys employing electrochemistry A method for inhibiting corrosion, e.g., pitting corrosion, of alloys is provided. Particularly, the method comprises contacting at least a portion of a surface of the alloy with an aqueous solution comprising a salt of one or more rare earth elements selected from ... | 02/28/2006 |
| 6943031 | Simultaneous chemical separation and surface-enhanced Raman spectral detection using metal-doped sol-gels Sol-gel beds and deposits are utilized for SERS analysis of liquid analytes. The use of the same medium to both separate the chemicals and also for SERS greatly reduces the complexity of such apparatus and enhances the efficiency of the method. ... | 09/13/2005 |
| 6943032 | Chemical separation and plural-point, surface-enhanced raman spectral detection using metal-doped sol-gels Sol-gel beds and deposits are utilized for SERS analysis of liquid analytes. Measurements are made at multiple points along the length of a column or channel to increase, very significantly, the speed of analysis, and use of the same medium to both separate the chem... | 09/13/2005 |
| 6852369 | Method for prevention of solid dissolution through covalent ligand bonding Methods for preventing dissolution of solid substrates, such as metal leaching from coal or corrosion of metal surfaces, are provided. The method comprises coating the solid substrate with a chelate ligand having the general structure: | 02/08/2005 |
| 6540844 | Mercaptofunctional silanes to deposit sol-gel coatings on metals A method for forming a sol-gel on a metal surface to provide an interface for promoting adhesion between the metal surface and an organic resin involves application of at least one metal alkoxide compound having at least one labile sulfur atom, and at lea... | 04/01/2003 |
| 6503343 | Controlled plating on reactive metals A direct displacement plating process provides a uniform, adherent coating of a relatively stable metal (e.g., nickel) on a highly reactive metal (e.g., aluminum) that is normally covered with a recalcitrant oxide layer. The displacement reaction proceeds... | 01/07/2003 |
| 6206981 | Process for enhancing the adhesion of organic coatings to metal surfaces A process is described for increasing the adhesion of organic coatings to metal surfaces, particularly aluminum and aluminum alloys. The process involves the utilization of an adhesion promoting composition in conjunction with a chromating composition in ... | 03/27/2001 |
| 6120619 | Passivation of stainless steels in organosulphonic acid medium To avoid the corrosion of stainless steels in organosulphonic acid medium, at least one oxidizing agent selected from cerium(IV), iron(III), molybdenum(VI) or vanadium(V) oxides or salts, nitrites and persulphates, is added to the medium in an amount whic... | 09/19/2000 |
| 6036758 | Surface treatment of copper A composition useful for the surface treatment of copper, in particular for micro-roughening of the copper surface so as to improve the adhesion characteristics of the copper surface, comprises an oxidizing agent for copper and an aromatic sulfonic acid o... | 03/14/2000 |
| 5919297 | Cobalt- and nickel-free sealant compositions Aluminium oxide sealant compositions, concentrates, and processes employing the same are described which comprise a combination of certain sulphonated aromatic compounds and condensates of aldehydes and certain other sulphonated aromatic compounds. Unexpe... | 07/06/1999 |
| 5846342 | Surface treatment agent for zinciferous-plated steel A chromium-free aqueous liquid surface treatment agent that can impart both a good corrosion resistance and a good paint adherence to zinciferous-plated steel sheet contains as its essential components polyhydroxyaryl carboxylic acid and/or depside thereo... | 12/08/1998 |
| 5693152 | Molecular specific detector for separation science using surface enhanced raman spectroscopy The present invention provides a generalized molecule-specific means of detection that can be applied to all existing separation systems with particular emphasis directed toward those methods based upon chromatographic, electrophoretic, and extractive tec... | 12/02/1997 |
| 5614028 | Method of cleaning and passivating a metal surface with acidic system and ethoxylated tertiary dodecyl mercaptan An acid based cleaning and passivating treatment for metal surfaces is provided. The single step acid based cleaning and passivating is provided by incorporating a corrosion inhibiting amount of an ethoxylated tertiary dodecyl mercaptan into an acidic met... | 03/25/1997 |
| 5601663 | Process for forming a black oxide on aluminum alloys and a solution therefor A process for producing a black oxide coating on an aluminum or aluminum alloy component in which the process entails a single treatment step with a novel solution to rapidly produce the desired black oxide coating. The process includes cleaning the surfa... | 02/11/1997 |
| 5487792 | Molecular assemblies as protective barriers and adhesion promotion interlayer A protective diffusion barrier having adhesive qualifies for metalized surfaces is provided by a passivating agent having the formula HS--(CH2)11 --COOH Which forms a very dense, transparent organized molecular assembly or layer that... | 01/30/1996 |
| 5456767 | Corrosion inhibition with bilayer-forming surfactants A method for inhibiting corrosion of a metal surface in a liquid medium is described. The method comprises incorporating into the medium a corrosion inhibiting amount of a combination of a surfactant that forms a bilayer on the metal surface in the fluid ... | 10/10/1995 |
| 5330588 | Organic-aqueous composition and process for forming corrosion-resistant coatings on metal surfaces A two-part compositional mixture including a non-metallic concentrate with the appropriately blended requisite components in recommended amounts including HNO3 provides a single bath and dip process system. The inventive concentrate is a multif... | 07/19/1994 |
| 5143562 | Broadly applicable phosphate conversion coating composition and process An aqueous liquid combination of simple and complex fluorides, a chelating agent for iron, phosphate ions, a hydroxylamine source, and an oxidizing agent selected from among water soluble nitroaromatic organic compounds, molybdates, and tungstates, provid... | 09/01/1992 |
| 5100486 | Method of coating metal surfaces to form protective metal coating thereon A process is disclosed for forming a protective metal coating on a metal surface using a flux consisting of an alkali metal fluoride, an alkaline earth metal fluoride, an alkali metal fluoaluminate, an alkali metal fluosilicate, and mixtures thereof. The ... | 03/31/1992 |
| 4770717 | Compositions and process for metal treatment Compositions and processes for activating metal surfaces prior to coating with a phosphate compound are disclosed. Colloidal alkyl benzene sulfonate salts are disclosed as a novel class of activating materials to replace titanium containing Jernstedt salt... | 09/13/1988 |
| 4690715 | Modification of the properties of metals The use of modifiers such as disulfides and phosphines is particularly effective in modifying the properties of metals such as noble metals and silver. For example, disulfides are useful for modifying the properties of gold and silver while phosphines are... | 09/01/1987 |
| 4531979 | Sealing of anodically oxidized aluminum or aluminum alloy surfaces and compounds useful therefor Anodically oxidized aluminium or aluminium alloy surfaces are sealed in the presence of an anti-smut agent which is a colorless, light-fast, organic compound having a molecular weight of at least 350 and containing (i) at least one sulphonic acid group; and (i... | 07/30/1985 |
| 4447274 | Conductor powders Nickel powders having an improved chemical stability are formed by reaction with an electroconductive coating such as a carbide, a silicide, or the like and, also, a reaction with sulfur.... | 05/08/1984 |
| 4376797 | Pretreating inorganic surfaces with ammonium salt of thioglycolic acid A method of treating inorganic materials such as metals to ensure strong adhesion of a subsequently applied coating of another material, such as a paint, comprises the steps of applying to a surface of the material a composition containing a complexing ag... | 03/15/1983 |
| 4180406 | Post treating zinc surfaces An environmentally acceptable composition and process imparts improved corrosion resistance and paint adhesion to a conversion coated surface of zinc or zinc alloy. The coated surface is post-treated with an aqueous composition containing a thiourea compo... | 12/25/1979 |
| 4093780 | Treatment of zinc surfaces to inhibit wet storage staining and products employed therein It has been found that esters and polyesters of thioglycolic acid, which form a protective, water insoluble complex with zinc atoms, are suitable for inhibiting wet storage staining and the formation of white rust in zinc and zinc coated materials. Many o... | 06/06/1978 |
| 4053329 | Method of improving corrosion resistance of metal substrates by passivating with an onium salt-containing material A method of providing improved corrosion resistance to coated metal substrates is disclosed. The process of the invention involves a passivating pretreatment with an onium salt before coating. The invention is particularly effective with ferrous metal sub... | 10/11/1977 |
| 4029827 | Mercapto functional polyorganosiloxane release agents for fusers in electrostatic copiers Polyorgano siloxanes having functional mercapto groups are applied to a heated fuser member in an electrostatic reproducing apparatus to form thereon a thermally stable, renewable, self-cleaning layer having superior toner release properties for electrosc... | 06/14/1977 |
