| Patents for C23F 1 - Etching metallic material by chemical means (16,062) |
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| 06/29/1982 | US4337114 Nodular copper removal from aluminum foil surfaces |
| 06/24/1982 | WO1982002110A1 Tape-driving element and process for producing same |
| 06/22/1982 | US4336316 Image forming method |
| 06/22/1982 | CA1126410A1 Printed circuit board having mutually etchable copper and nickel layers |
| 06/16/1982 | EP0053719A1 Process for etching metal surfaces |
| 06/15/1982 | CA1125631A1 Caustic solution having controlled dissolved aluminum content |
| 06/15/1982 | CA1125630A1 Conditioning of caprolactam polymers for electroless plating |
| 06/09/1982 | EP0053279A1 Method of preparing a printed circuit |
| 06/02/1982 | EP0052787A1 Etchant composition and application thereof |
| 05/25/1982 | US4331520 Process for the recovery of hydrogen-reduced metals, ions and the like at porous hydrophobic catalytic barriers |
| 05/25/1982 | US4331504 Sulfur fluoride |
| 05/11/1982 | US4329210 Method of regenerating etchant and recovering etched metal |
| 05/10/1982 | EP0040243A4 Process and apparatus for producing metals at porous hydrophobic catalytic barriers. |
| 05/04/1982 | US4328298 Thin metal on chromium, development of photoresist, electroless plating |
| 04/27/1982 | US4327134 Using nitric acid bath containing fluoride, followed by fluoride free bath |
| 04/27/1982 | CA1122469A1 Method of engraving workpiece surfaces by etching |
| 04/20/1982 | US4325779 Method for shaping and finishing a workpiece |
| 04/14/1982 | EP0049678A1 Etchant for chemical milling a high tungsten content superalloy and process |
| 04/07/1982 | EP0049207A1 Process for machining the surface of a nickel base superalloy workpiece |
| 04/06/1982 | US4323422 Method for preparing optically flat damage-free surfaces |
| 03/31/1982 | EP0048381A1 Process for the regeneration of hydrochloric copper chloride etching solutions |
| 03/31/1982 | EP0048380A1 Process for making ring zones in narrow boreholes by etching and/or electroplating |
| 03/24/1982 | EP0048230A2 Procedure for chemical, automatic dissolution of molybdenum core wire in tungsten filament coil and a device for implementing the procedure |
| 03/24/1982 | EP0047895A2 Novel stripping composition and method of using same |
| 03/23/1982 | US4321105 Method of producing embossed designs on surfaces |
| 03/16/1982 | US4319955 Ammoniacal alkaline cupric etchant solution for and method of reducing etchant undercut |
| 03/16/1982 | US4319923 By making the solution basic, and adding a borohydride to cause precipitation |
| 03/16/1982 | US4319922 Recovery of gold from an etching solution |
| 03/09/1982 | US4318770 Surface etching before electroding zirconia exhaust gas oxygen sensors |
| 03/03/1982 | EP0046522A1 Method for the regeneration of an ammoniacal etchant |
| 03/02/1982 | US4318026 Method of making a grid for a cathode-ray tube electron gun |
| 03/02/1982 | US4317698 End point detection in etching wafers and the like |
| 02/16/1982 | US4315797 Chemical pipe cutter with exponential spacing between reactant stages |
| 02/10/1982 | EP0045639A2 Method of forming a microscopic pattern |
| 02/09/1982 | US4314876 Titanium etching solution |
| 02/02/1982 | US4313783 Computer controlled system for processing semiconductor wafers |
| 02/02/1982 | CA1117275A1 Stabilized hydrogen peroxide solutions |
| 01/26/1982 | CA1116837A1 Method for making an air cooled combustor |
| 01/19/1982 | US4311551 Composition and method for etching copper substrates |
| 01/13/1982 | EP0043438A2 Methylene chloride-methane sulfonic acid stripping compositions and methods for using same |
| 01/12/1982 | US4310381 Method for improving magnetic properties of metallic glass ribbon |
| 01/12/1982 | US4309886 Process for producing steel strip material for use in manufacture of shadow mask of Braun tube for color TV |
| 01/06/1982 | EP0043094A1 Stainless steel short fiber and process for preparing the same |
| 01/05/1982 | CA1115627A1 Metal-dissolution solution containing sulfuric acid, hydrogen peroxide and mono-or dihydro-substituted cycloparaffin |
| 12/29/1981 | US4308091 Etching medium and process for the correction of chromed gravure cylinders |
| 12/22/1981 | US4307176 On electron resists |
| 12/22/1981 | US4306933 Tin/tin-lead stripping solutions |
| 12/09/1981 | EP0041292A1 Process of forming a metal article, process of manufacturing a plastics mask upon a metal carrier and installation for applying a plastics mask upon the surface of a metal carrier |
| 12/09/1981 | EP0041291A1 Process and installation for forming a metal product by applying a photo semi-conducting material |
| 12/08/1981 | US4304681 Novel stripping composition for positive photoresists and method of using same |
| 12/08/1981 | CA1113701A1 Guarded razor blade |
| 11/25/1981 | EP0040243A1 Process and apparatus for producing metals at porous hydrophobic catalytic barriers. |
| 11/24/1981 | US4302273 Etching tank in which the solution circulates by convection |
| 11/24/1981 | US4302246 Solution and method for selectively stripping alloys containing nickel with gold, phosphorous or chromium from stainless steel and related nickel base alloys |
| 11/18/1981 | EP0039906A2 Aperture mask for a color television tube, color television tube comprising such a mask and method for obtaining the mask |
| 11/17/1981 | US4301194 Chemical milling maskant application process |
| 11/17/1981 | US4300980 Overlapping double etch technique for evaluation of metallic alloys to stress corrosion cracking |
| 10/27/1981 | US4297257 Metal stripping composition and method |
| 10/14/1981 | EP0037551A1 Method and apparatus for etching a metallic sheet |
| 10/14/1981 | EP0037483A1 Method of intensifying the rinsing and cleaning processes for perforations in pieces |
| 10/06/1981 | US4293624 Photoresists, development, multilayer |
| 09/29/1981 | US4292148 Post-treatment of etched aluminum capacitor foil |
| 09/23/1981 | EP0036401A1 A reagent and a method for the extraction of copper from an ammoniacal copper solution |
| 09/23/1981 | EP0036113A1 Solution for dissolving noble metal alloys which include tin and re-work method of removing said alloys from a substrate |
| 09/08/1981 | US4288282 Etching metallic foil, photoresist |
| 09/01/1981 | US4286542 Liquid immersion apparatus for minute articles |
| 08/25/1981 | US4286051 Methods of engraving workpiece surfaces by etching |
| 08/18/1981 | US4284468 Patterned chemical etching of high temperature resistant metals |
| 08/11/1981 | US4283259 Method for maskless chemical and electrochemical machining |
| 08/11/1981 | US4283248 Phosphoric acid, phosphorous acid, or pyrophosphoric acid or mixtures of same |
| 08/04/1981 | US4282267 Methods and apparatus for generating plasmas |
| 08/04/1981 | US4282041 Method for removing aluminide coatings from nickel or cobalt base alloys |
| 07/29/1981 | EP0032530A1 Use of an apparatus for treating a board shaped object by a liquid |
| 07/28/1981 | US4280887 Method of regenerating ammoniacal etching solutions useful for etching metallic copper |
| 07/21/1981 | US4279691 Vapor deposition onto a metal pipe |
| 07/15/1981 | EP0032028A2 Method and apparatus for forming electrical interconnections |
| 06/30/1981 | CA1103974A1 Method for making etch-resistant stencil with dichromate-sensitized casein coating |
| 06/23/1981 | US4274908 Nitric acid, sulfate, chloride and metal ions |
| 06/09/1981 | US4272492 Selective extraction and recovery of copper |
| 06/09/1981 | US4271571 Process for manufacturing shadow mask of Braun tube for color TV |
| 05/26/1981 | US4269678 Method for regenerating a cupric chloride and/or ferric chloride containing etching solution in an electrolysis cell |
| 05/26/1981 | US4269653 For electron beams; surrounding a projection on an etched substrate with a high-melting metal and removing the substrate; accuracy |
| 05/26/1981 | CA1101765A1 Process for etching holes |
| 05/05/1981 | US4266008 Method for etching thin films of niobium and niobium-containing compounds for preparing superconductive circuits |
| 05/05/1981 | US4265722 Electrolysis in ferric sulfate oxidizing agent |
| 05/05/1981 | CA1100395A1 Method of controlling wafer etching rates |
| 04/30/1981 | WO1981001159A1 Process and apparatus for producing metals at porous hydrophobic catalytic barriers |
| 04/28/1981 | US4264410 Resist patterns giving sharp points and smoot edges |
| 04/07/1981 | US4260451 Method of reworking substrates, and solutions for use therein |
| 04/07/1981 | CA1098884A1 Erosion device comprising a head with knives |
| 04/02/1981 | WO1981000862A1 Methods and apparatus for generating plasmas |
| 03/10/1981 | US4255247 Prepared by etching an alloy substrate to remove part of alloy to form pores |
| 03/04/1981 | EP0024318A1 Etching composition and process for correcting chromium coated cylinders for intaglio printing |
| 03/03/1981 | US4254163 Strippable resists |
| 02/24/1981 | US4252621 Process of regenerating an ammoniacal etching solution |
| 02/11/1981 | EP0023729A1 Process for detinning tin coated scrap |
| 02/10/1981 | US4249963 Method for improving a property of an alloy |
| 01/27/1981 | CA1094502A1 Electrolytically etching masked gold layer without exceeding the chemical etching rate |
| 01/14/1981 | EP0022280A1 Process for the chemical etching of silicon substrates |
| 01/14/1981 | EP0022279A1 Method of manufacturing an optically transparent and electroconductive thin-film pattern |