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Class 148/245 - Electrically insulating coating formed which is more than mere oxide formation


Subclass of Class 148 - Metal treatment
Definition: Subject matter wherein the reaction product of the metal
No. of patents: 31
Last issue date: 08/31/2010


NumberTitleIssue Date
7785425Method for passivating stainless steel product and method for producing stainless steel separator for fuel cell
By a press-formed starting member (11) being immersed in a process liquid (12) at 40 to 60° C. and of pH 9 to 12, a passive film (26) is formed at the surface of the press-formed starting member. There is no solving out of metal ions from the p...
08/31/2010
7105063Method and materials for extending fuser member life
A method of treating a fuser member surface to extend the life thereof includes applying to the fuser member surface an ethylene diamine tetraacetate. In addition, the fuser member may be subjected to a sonic treatment during the application of the ethylene diamine ...
09/12/2006
7105472Coating solution for metals and metal alloys
The present invention relates to a coating solution to be applied on the surface of metals or metal alloys, a process for cold forming of metals and metal alloys using said coating solution, and a coated blank made of a metal or a metal alloy. ...
09/12/2006
6875334Method of anodizing of magnesium and magnesium alloys and producing conductive layers on an anodized surface
A method, a composition and a method for making the composition for anodizing metal surfaces, especially magnesium surfaces is disclosed. The composition is a basic aqueous solution including hydroxylamine, phosphate anions and nonionic surfactants. A complementary ...
04/05/2005
6410886Nitinol heater elements
An electrical resistive heating system having a Nitinol heater element in the form of wire, rod strip or tube, is flexible, ductile, tough aid chemically non-reactive. The element has connectors at each end for leads from a controller that controls the fl...
06/25/2002
6033492Composition and process for autodeposition with modifying rinse of wet autodeposited coating film
The uniformity of gloss of a dried autodeposited resin film on a metal surface can be increased by rinsing the wet autodeposited film initially formed with an aqueous modifying rinse having a pH from 6 to 11 and comprising from 0.2 to 10.0 g/L in total of...
03/07/2000
5769966Insulator coating for high temperature alloys method for producing insulator coating for high temperature alloys
A method for fabricating an electrically insulating coating on a surface is disclosed comprising coating the surface with a metal, and reacting the metal coated surface with a nonmetal so as to create a film on the metal-coated surface. Alternatively, the...
06/23/1998
5558724Method of insulating a magnetic lamination
A method for making a lamination insulated by iron-manganese phosphate comprises the following operations: 1. The lamination is treated with an acid or basic medium to eliminate the surface layer of the lamination that contains excess silicon and aluminum. 2. ...
09/24/1996
5456767Corrosion 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
5147827Method for producing a passivation film of InP compound semiconductor
A device such as a phototransistor, a photodiode, a laser diode or the like including a compound semiconductor coated with a stable passivation film to reduce leakage current is disclosed. The passivation film includes oxygen, a metallic element and const...
09/15/1992
5098485Method of making electrically insulating metallic oxides electrically conductive
A method of making an electrical contact to a metal on which an electrically insulating native oxide is formed includes applying atoms or ions to the native oxide, heating the metal and oxide to a temperature and for a time effective to make the oxide, wh...
03/24/1992
4904315Method for improving magnesium oxide steel coatings using non-aqueous solvents
This invention is directed to non-aqueous magnesium oxide slurries and the use thereof to coat silicon steels prior to high temperature annealing....
02/27/1990
4830877Compositions for forming insulating films on electromagnetic steel plates and methods for making the same
The present invention provides an insulating film-forming composition in which a mixed resinous liquid obtained from a specific proportion of an aqueous emulsion of an acrylic resin and/or an acryl-styrene base resin and an aqueous dispersion of PAN free ...
05/16/1989
4756933Process of applying an insulating layer
A process is disclosed for applying to sheet steel an electrically insulating layer which permits mainly a satisfactory welding of the sheets when they have been blanked and stacked. The sheet steel is contacted with a treating liquor which contains a res...
07/12/1988
4500605Electrical component forming process
The process of forming a composite with an alloy having an alloy component of about 0.5 to 12% aluminum and a matrix selected from a material of the group consisting of copper, iron or nickel. The alloy is heated in an oxygen-rich atmosphere to form a mat...
02/19/1985
4498936Insulative coating composition for electrical steels
An insulative coating composition for electrical steels containing Al+++, Mg++, H2 PO4- and aluminum silicate in specified proportions, in the form of a stable aqueous suspension which provides a tens...
02/12/1985
4496399Method and aqueous coating compositions for forming anti-stick and insulative coatings on semi-processed and fully-processed electrical steels
A method and aqueous coating composition for forming an anti-stick and insulative coating on cold-rolled, non-oriented, semi-processed steel; cold-rolled, non-oriented, fully-processed steel; cold-rolled motor lamination steel; and punching quality orient...
01/29/1985
4451299High temperature coatings by surface melting
The high temperature properties of protective coatings, paricularly the oxidation resistance, is improved by the melting of a surface portion of the coating using a high intensity energy source. The surface melting refines and homogenizes the coating stru...
05/29/1984
4367101Method of providing an anti-stick coating on non-oriented, semi-processed electrical steels to be subjected to a quality anneal
A process of providing an inorganic anti-stick coating directly on non-oriented, semi-processed electrical steels by applying to such steels a coating solution containing Al+++, Mg++, and H2 PO4- in ...
01/04/1983
4347085Insulative coatings for electrical steels
An aqueous coating solution for forming an insulative coating directly on electrical steels and on steels having a mill glass thereon. The aqueous solution comprises an aluminum-magnesium phosphate premix solution and a colloidal silica solution. The prem...
08/31/1982
4316751Electrical resistance coating for steel
Disclosed is a process for applying an electrical insulating coating onto a ferrous metal surface and the ferrous metal surface with the coating thereon. The insulating coating comprises phosphate and nitrate applied in a thin film of from about 200 mg to...
02/23/1982
4295899Process for coating iron and steel
A composition and process are useful for imparting a coating to an iron or steel surface which exhibits decorative and improved electrical and corrosion resistance properties. The composition contains an alkali silicate water-glass, an alkali polyphosphat...
10/20/1981
4238534Method for forming a heat-resistant coating on an oriented silicon steel sheet
A heat-resistant insulating coating having a high adhesion can be formed on an oriented silicon steel sheet by the use of an aqueous coating dispersion containing colloidal silica dispersed therein, at least one of monobasic phosphates of Mg, Al, Sr, Ba a...
12/09/1980
4213792Coating solution for applying tensioning coatings to electrical steel strip
A coating solution for forming on electrical steel strips an electrical insulation coating for tensioning the strip, contains on a dry weight basis for every 100 parts by weight of phosphoric acid, calculated as P2 O5, from 10 to 35 ...
07/22/1980
4120702Treating a silicon steel material having a silicate protective coating thereon with an aqueous solution containing phosphates to form a further protective coating
Silicon steel sheets which have a silicate protective coating are further protected by being first coated with an aqueous solution containing (1) phosphate ions, (2) silica grains, (3) iron and/or manganese ions, and (4) negative ions which convert to vol...
10/17/1978
4026734Method of coating titanium
A process for treating the surfaces of a titanium or titanium alloy article which comprises immersing the titanium article in an aqueous solution of ammonium phosphate and then oxidizing the surface by heating the coated article at a temperature of about ...
05/31/1977
3996073Insulative coating for electrical steels
Insulative coatings for electrical steels and methods of making them. The coatings are hard, glassy and smooth in nature, are easily cured and improve the magnetic characteristics of the electrical steels. The coatings are produced by applying to an elect...
12/07/1976
3985583Method for forming an insulating coating on an oriented silicon steel sheet
An insulating coating having a high adhesion on an oriented silicon steel sheet, which applies a tension on the surface of the steel sheet and restrains magnetostriction increased when compressive stress is subjected to said oriented silicon steel sheet, ...
10/12/1976
3948786Insulative coating for electrical steels
Insulative coatings for electrical steels and methods of making them. The coatings are hard, glassy and smooth in nature, are easily cured and improve the magnetic characteristics of the electrical steels. The coatings are produced by applying to an elect...
04/06/1976
3940291Insulative coatings for electrical steels
Insulative coatings for electrical steels having improved resistance to deterioration during stress relief anneals or other heat treatments carried on in reducing atmospheres. They may be produced by coating electrical steel with an aqueous solution of ph...
02/24/1976
3930897Method of treating an object of silicon steel provided with an insulating protective coating of silicate with a solution of phosphate
An object of silicon steel, such as sheet and strip for motors, generators and transformers, which has an insulating coating of silicate, is provided with a solution of phosphate by applying to the silicate-coated object an aqueous solution containing pho...
01/06/1976
 
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