| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 205283000 | Chromium | 15 |
| 20090166212 | USE OF PHOSPHINIC ACIDS AND/OR PHOSPHONIC ACIDS IN REDOX PROCESSES - The present invention relates to the use of phosphinic acids and/or phosphonic acids and salts thereof, preferably as surface-active compounds, in redox processes, in particular in electroplating technology, particularly preferably in electroplating baths, and to electroplating baths comprising these compounds. | 07-02-2009 |
| 20100213072 | METHOD OF MANUFACTURING CHROMIUM PLATED ARTICLE AND CHROMIUM PLATING APPARATUS - A pulse current from a pulse current supply side is fed to a middle part of an anode holding body to which anodes are connected; both end portions of a cathode holding body, to which cathodes are connected, are connected to a negative pole on the pulse power source side; and inductances of wiring between adjacent anodes and inductances of wiring between adjacent cathodes are set at a ratio of 1:2:3:4 in a direction of spacing from a connection to the pulse power source side. Pulse currents are equally fed to each work and it can be ensured that chromium plating treatment of each work is made equal. | 08-26-2010 |
| 20150292106 | ELECTRODE FOR OXYGEN EVOLUTION IN INDUSTRIAL ELECTROCHEMICAL PROCESSES - The invention relates to an electrode for electrolytic processes, in particular to an anode suitable for oxygen evolution comprising a valve metal substrate, a catalytic layer, a protection layer consisting of oxides of valve metals interposed between the substrate and the catalytic layer and an outer coating of oxides of valve metals. The electrode of the invention is particularly suitable for processes of cathodic electrodeposition of chromium from an aqueous solution containing Cr (III). | 10-15-2015 |
| 205284000 | Utilizing specified anode | 3 |
| 20100108532 | Process for Plating Chromium from a Trivalent Chromium Plating Bath - A plating process for plating chromium metal onto substrates is disclosed. The process uses a trivalent chromium plating bath with a sulfate and/or sulfonate matrix. The process also utilizes insoluble anodes. An addition of manganese ions to the plating bath inhibits the formation of detrimental hexavalent chromium ions upon use of the plating bath. | 05-06-2010 |
| 20100116679 | CHROMIUM HYDROXIDE, PROCESS OF PREPARING THE SAME, TRIVALENT CHROMIUM-CONTAINING LIQUID PREPARED USING THE SAME, AND CHROMIUM PLATING METHOD USING THE SAME - Chromium hydroxide of the invention has an average particle size D determined from a scanning electron micrograph of 40 to 200 nm and a degree of agglomeration of 10 and more and less than 70, the degree of agglomeration being defined to be a ratio of a volume average particle size D50 determined with a particle size analyzer to the average particle size D, D50/D. The chromium hydroxide is suitably obtained by adding an aqueous solution containing trivalent chromium to an aqueous solution of an inorganic alkali at a reaction temperature of 0° C. or higher and lower than 50° C. The inorganic alkali is preferably an alkali metal hydroxide. | 05-13-2010 |
| 20120279869 | CHROMIUM PLATING METHOD - A chromium plating method wherein an article to be plated is immersed in an acidic chromium electroplating bath and electrolysis is carried out using a positive electrode that has an iridium oxide-containing film at least on the surface. The acidic chromium electroplating bath contains a trivalent chromium compound and a hexavalent chromium compound at a ratio such that the total chromium concentration of trivalent chromium and hexavalent chromium is 60-140 g/L, the hexavalent chromium concentration is 5-40 g/L, and the ratio of the hexavalent chromium concentration is 5-35% by mass of the total chromium concentration, while containing 50-400 g/L of organic carboxylate ions and having a lead ion concentration of not more than 2 mg/L. By the method, a chromium plating film that is good and stable over a long time period can be obtained. In addition, the plating bath can be controlled extremely easily in the chromium plating method. | 11-08-2012 |
| 205285000 | Colored chromium coating | 3 |
| 20120111731 | Dark Colored Chromium Based Electrodeposits - An aqueous acidic trivalent chromium electrolyte comprising trivalent chromium ions and a complexing agent for maintaining the trivalent chromium ions in solution is provided in which the aqueous electrolyte comprises additives capable of producing a coating on a substrate having a desired dark hue. The additives typically comprise a dispersion of colloidal silica and an additional additive selected from thiocyanate ions and/or iron ions. The electrolyte is used in a method of producing the desired dark-hued decorative chromium coating on a substrate by electrodeposition. | 05-10-2012 |
| 20140042033 | ELECTROPLATING BATH AND METHOD FOR PRODUCING DARK CHROMIUM LAYERS - The invention relates to methods and plating baths for electrodepositing a dark chromium layer on a workpiece. The trivalent chromium electroplating baths comprise sulphur compounds and the methods for electrodepositing a dark chromium layer employ these trivalent chromium electroplating baths. The dark chromium deposits and workpieces carrying dark chromium deposits are suited for application for decorative purposes. | 02-13-2014 |
| 20160068983 | ELECTROPLATING BATH AND METHOD FOR PRODUCING DARK CHROMIUM LAYERS - The invention relates to methods and plating baths for electrodepositing a dark chromium layer on a workpiece. The trivalent chromium electroplating baths comprise sulphur compounds and the methods for electrodepositing a dark chromium layer employ these trivalent chromium electroplating baths. The dark chromium deposits and workpieces carrying dark chromium deposits are suited for application for decorative purposes. | 03-10-2016 |
| 205286000 | Utilizing inorganic fluorine-containing bath | 1 |
| 20160024674 | FUNCTIONAL CHROMIUM LAYER WITH IMPROVED CORROSION RESISTANCE - The aqueous electroplating bath according to the present invention comprises chromium(VI) ions, sulfate ions and methane-trisulfonic acid or a salt thereof as the catalyst. The functional chromium layer deposited from the aqueous electroplating bath according to the present invention has an increased corrosion resistance. | 01-28-2016 |
| 205287000 | Utilizing trivalent chromium-containing bath | 4 |
| 20120024714 | TRIVALENT CHROMIUM PLATING SOLUTION AND PLATING METHOD USING THE SAME - Provided is hard trivalent chromium plating solution having improved covering power. The trivalent chromium plating solution comprises a trivalent chromium compound comprising a compound of formula (1) below; | 02-02-2012 |
| 20220136121 | METHOD FOR MANUFACTURING CHROMIUM OXIDE COATED TINPLATE - A method for electroplating a steel strip with a plating layer and an improvement thereof. | 05-05-2022 |
| 205288000 | Thiocyanate-containing | 1 |
| 20120312694 | Dark Colored Chromium Based Electrodeposits - An aqueous acidic trivalent chromium electrolyte comprising trivalent chromium ions and a complexing agent for maintaining the trivalent chromium ions in solution is provided in which the aqueous electrolyte comprises additives capable of producing a coating on a substrate having a desired dark hue. The additives typically comprise a dispersion of colloidal silica and an additional additive selected from thiocyanate ions and/or iron ions. The electrolyte is used in a method of producing the desired dark-hued decorative chromium coating on a substrate by electrodeposition. | 12-13-2012 |
| 205289000 | Organic carboxyl compound-containing | 1 |
| 20090211914 | Trivalent Chromium Electroplating Solution and an Operational Method Thereof - A trivalent chromium-based electroplating solution in accordance with the present invention a trivalent chromium salt, a bivalent nickel salt, a complex agent, a conductive salt, a buffering agent and an additive for electroplating a chromium-nickel alloy deposit on a component. By using the lowly toxic trivalent chromium to substitute highly toxic hexavalent chromium, an electroplating procedure with the present trivalent chromium-based electroplating solution has less pollution and high current efficiency to allow the electroplating performing at the room temperature. | 08-27-2009 |
| 205290000 | Utilizing organic compound-containing bath | 1 |
| 20110290658 | ADDITIVE FOR CHROMIUM ELECTROLYTES - The fluorine surfactant-free, long-term-stable and biodegradable additive for chromium electrolytes lowers the surface tension and hence improves the chromium deposition process, especially in the application for the electrolytical chromium-plating. Preferred additives are CH | 12-01-2011 |
