Class 205/250 - Including iron group metal

Subclass of Class 205 - Electrolysis: processes, compositions used therein, and methods of preparing the compositions
Definition: Subject matter wherein the alloy includes an iron group
No. of patents: 39
Last issue date: 03/27/2012

Number	Title	Issue Date
8142639	Hard gold alloy plating bath A hard gold plating solution and plating method which provides a gold plating solution with high deposition selectivity using a gold plating solution containing gold cyanide, cobalt salt, and hexamethylenetetramine. ...	03/27/2012
7153135	Method for automatically creating a denture using laser altimetry to create a digital 3-D oral cavity model and using a digital internet connection to a rapid stereolithographic modeling machine A method is presented for rapidly making and delivering directly to a consumer a full upper and/or lower denture on the basis of contemporaneous digital image information laser scanned from the person's oral cavity after all respective upper and/or lower teeth have ...	12/26/2006
6576114	Electroplating composition bath There is provided an electrodeposit free of cobalt, cadmium and nickel which contains 1.25 to 1.55% w/w iron, 1 to 2 ppm zirconium; and 97.7 to 98.2% gold and has a pale yellow color less than 3N on the NIHS scale. The invention also provides an electropl...	06/10/2003
6183545	Aqueous solutions for obtaining metals by reductive deposition An aqueous solution for the reductive deposition of metals comprising, besides water, (A) a phosphine of the general formula (1) ##STR1## in which R1, R2, and R3 denote lower alkyl groups, at least one of which being hydr...	02/06/2001
6165342	Cyanide-free electroplating bath for the deposition of gold and gold alloys Cyanide-free electroplating baths for deposition of gold and gold alloy coatings, using sulphurous gold complexes that are stable for a relatively long time, can be used with current density over 1 A/dm2 and are practically odor-free, are obtai...	12/26/2000
5552031	Palladium alloy plating compositions A palladium alloy plating composition comprising 4 to 20 g/l of palladium ion, 0.3 to 2.0 g/l of gold ion, 5 to 100 g/l of a conductive salt and 0.5 to 20 g/l of a complexing agent, and optionally 0.3 to 5 g/l of an alloying metal ion provides a plating w...	09/03/1996
5277790	Non-cyanide electroplating solution for gold or alloys thereof Disclosed are cyanide free electroplating solutions for gold or alloys thereof; said solutions comprising gold in the form of a soluble sulfite complex, an added source of sulfite and/or bisulfite ion and a supporting electrolyte; and said solutions furth...	01/11/1994
5169514	Plating compositions and processes A gold or gold alloy plating composition comprises: a source of gold ions such as potassium gold (I) cyanide; optionally a source of alloying metal (e.g. nickel or cobalt) ions, for example as a sulphate; optionally a complexing agent for the alloying met...	12/08/1992
4795534	Electrolyte solution and process for gold electroplating A bath for producing deposits of gold by electrodeposition, comprising: an aqueous solution containing at least one soluble gold cyanide compound; formic acid in a concentration of at least 20 ml/l to about 150 ml/l of said bath solution, said formic acid...	01/03/1989
4767507	Gold electroplating bath An acid gold electroplating bath contains gold in an electrodepositable form, (e.g. potassium gold cyanide), together with 3-(3-pyridyl) acrylic acid or 3-(3-quinolyl) acrylic acid, and optionally a metallic additive. The metallic additive is preferably a...	08/30/1988
4755264	Electrolyte solution and process for gold electroplating Gold plating baths comprising a nickel or cobalt brightener/hardener, containing oxalic acid and additionally at least one dicarboxylic acid selected from the group consisting of succinic acid, malonic acid, glutaric acid and adipic acid, enable the use o...	07/05/1988
4744871	Electrolyte solution and process for gold electroplating Gold plating baths comprising a nickel or cobalt brightener/hardener, containing a dicarboxylic acid having the formula HOOC--(CH2)n --COOH in which n is an integer from 1 to 4 and mixtures thereof, an acid selected from the group co...	05/17/1988
4634505	Process and bath for the electrolytic deposition of gold-tin alloy coatings To produce electrolytic deposition of glossy gold/tin alloys there are employed baths having a pH below 3 which contain 1 to 20 g/l gold in the form of tetracyanoaurate (III), 0.1 to 10 g/l tin, an acid and a conducting salt, whereby the tin is in the for...	01/06/1987
4615774	Gold alloy plating bath and process A citrate-free electroplating bath for the high speed deposition of gold alloy plates on substrates comprises a source of gold (for example gold (I) potassium cyanide), a source of alloying metal (for example, nickel sulfate), oxalic acid and formic acid....	10/07/1986
4536259	Cathode having high durability and low hydrogen overvoltage and process for the production thereof A cathode having high durability and low hydrogen overvoltage comprising an electrode substrate and an alloy layer formed thereon, characterized in that said alloy layer is made of an alloy comprising Component X selected from the group consisting of nick...	08/20/1985
4478691	Silver plating procedure A silver electroplating procedure is disclosed which permits rapid and efficient plating and yields ductile, adherent silver films. The electroplating bath comprises silver complexed with an aliphatic polyamine compound with 3 to 20 carbon atoms. Particul...	10/23/1984
4470886	Gold alloy electroplating bath and process Improved electroplating ternary gold alloy plating baths wherein the gold ingredient is an alkali metal auricyanide, the gold metal being in the plus three oxidation state, and the alloying metals are both cobalt and molybdenum. The electroplating baths a...	09/11/1984
4436595	Electroplating bath and method There is provided an improved gold alloy electroplating bath comprising glycolic acid, an alkali metal salt of glycolic acid, gold and an alloying metal plus a chelating agent capable of forming a stable complex with metal impurities, particularly nickel....	03/13/1984
4396471	Gold plating bath and method using maleic anhydride polymer chelate An all-purpose gold cyanide electroplating bath utilizes a cobalt, nickel, or indium hardener as a chelate with the acid form of a methyl vinyl ether/maleic anhydride interpolymer. The bath is capable of producing high levels of hardness in deposits that ...	08/02/1983
4391679	Electrolytic bath and process for the deposition of gold alloy coatings In the electro industry, there are needed acid gold alloy baths which give glossy, ductile coatings, operate at high current densities, and contain little non-metallic impurities. This is attained by a bath based on potassium cyanoaurate (III) and an acid...	07/05/1983
4379738	Electroplating zinc An electroplating process is described for plating various metals and alloys in which certain organic substances are added to the plating solution. This permits high plating rates with excellent plating results, including smooth bright finishes, freedom f...	04/12/1983
4377449	Electrolytic silver plating A silver electroplating bath comprising heterocyclic organic additives such as lactones, lactams, cyclic sulfate esters, cyclic imides and cyclic oxazolinones, preferably phenolphthalein....	03/22/1983
4377448	Electrolytic gold plating A gold electroplating bath comprising heterocyclic organic compounds such as lactones, lactams, cyclic sulfate esters, cyclic imides and cyclic oxazolinones....	03/22/1983
4374006	Electrolytic bath for the deposition of high gloss white gold coatings Known white gold baths containing 2-10 g/l of gold as the sulfito complex, 2-40 g/l of alkali sulfite, 2-40 g/l of a complex former, 1-10 g/l of nickel and 1-20 g/l of cadmium, in each case in the form of a water soluble salt are sensitive to impurities o...	02/15/1983
4310392	Electrolytic plating The electroplating of various metals such as zinc, copper, cadmium, chromium, nickel cobalt, gold, silver, palladium, platinum, ruthenium and alloys of such metals takes place from electrolytes comprising heterocyclic additives such as lactones, lactams, ...	01/12/1982
4199416	Composition for the electroplating of gold A composition of use in compounding an electroplating bath for electrodeposition of gold alloys. The composition contains a nitrosulphite gold complex and at least an alloying agent in the form of a sulphite....	04/22/1980
4197172	Gold plating composition and method A bath for electroplating hard gold deposits at relatively high current efficiencies comprises an aqueous solution of an alkali metal dihydrogen phosphate, nitrilotris(methylene) triphosphonic acid, a nickel and/or cobalt phosphate compound, triethanolami...	04/08/1980
4192723	Aqueous solution of monovalent gold and ammonium sulfite complex, process for the preparation thereof and electrolytic bath obtained therefrom for the plating of gold or gold alloys Aqueous solution of monovalent gold and ammonium sulfite complex. As opposed to the corresponding alkali-gold sulfite solution, this solution is stable under slightly acidic pH conditions and can be used advantageously for preparing electrolytic baths for...	03/11/1980
4186064	Method and electrolyte for electrodeposition of bright gold and gold alloys Bright gold or gold alloy electroplating employing a preformed fully neutralized salt of a cobalt or nickel metal organophosphorus chelate as the brightening agent....	01/29/1980
4168214	Gold electroplating bath and method of making the same An aqueous bath for the electroplating of gold is particularly adapted for plating a gold strike on stainless steel and includes about 2 to 16.5 grams per liter of auric(III) gold in a cyanide complex. Potassium nitrate is employed as an electrolyte and e...	09/18/1979
4088549	Bright low karat silver gold electroplating Disclosed is an aqueous electroplating bath and process for obtaining bright deposits of silver-gold alloys. The bath contains a polyakylene imine and an alkylene polyamine....	05/09/1978
4076598	Method, electrolyte and additive for electroplating a cobalt brightened gold alloy Disclosed are methods and electrolytes for the electrodeposition of a gold alloy containing 0.05 to 0.4 per cent by weight of cobalt. The electrolytes comprise aqueous acidic solutions containing nitrilotriacetic acid....	02/28/1978
4075065	Gold plating bath and process An electrolyte for depositing gold on a surface includes an alkali gold cyanide, a weak Lewis acid, a weak polyfunctional water-soluble aliphatic acid, a non-depositing metallic compound, a metallic hardener, and water....	02/21/1978
4073700	Process for producing by electrodeposition bright deposits of gold and its alloys This invention discloses a process for producing by electrodeposition bright deposits of gold and its alloys at greatly increased speeds and with an evenness of distribution significantly greater than conventional baths resulting in considerable savings i...	02/14/1978
4069113	Electroplating gold alloys and electrolytes therefor Disclosed is an electrolyte for the deposition of predominantly gold alloy deposits, a method for the preparation and use of the electrolyte, and an article obtained by such electrodeposition. These electrolytes contain soluble gold and base metal salts, ...	01/17/1978
4012294	Gold sulfite baths containing organophosphorous compounds Disclosed is an improved gold-sulfite bath for plating gold and gold alloy deposits. By the inclusion in the bath of small amounts of certain organic phosphorus compounds, the quality of the deposit is rendered less sensitive to substantial changes in ope...	03/15/1977
4001093	Method of electroplating precious metals in localized areas A method of electroplating precious metal in localized areas. The deposits obtained are usually nonuniform and limited to only those areas where coating is actually required thus offering considerable economic savings. The method uses shaped anodes approa...	01/04/1977
3990954	Sulfite gold plating bath and process Disclosed is an improved electroplating bath and process for obtaining semi-bright to bright electrodeposits of gold and gold alloys. The electroplating bath contains a gold sulfite complex and a nitrogen-free diphosphonic compound having at least two pho...	11/09/1976
3978302	Switching element having gold-cobalt contacts A switching element having reed contacts in a hermetically closed envelope with contact surfaces consisting of a gold alloy having a carbon content of between 0.5 and 1.5 % by weight and a cobalt content of between 1 and 6 % by weight....	08/31/1976

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Class 205/250 - Including iron group metal