| Patents for C23F 1 - Etching metallic material by chemical means (16,062) |
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| 04/06/1989 | WO1989002212A3 Improved circuit board material and electroplating bath for the production thereof |
| 04/05/1989 | CN1032194A Sheets of aluminium alloy containing magnesium suitable for producing bodies of cans by drawing and ironing, and method of obtaining said sheets |
| 04/04/1989 | US4818962 Waveguide obtained by selective etching method |
| 04/04/1989 | US4818336 Contoured surface, progessive etching |
| 03/22/1989 | EP0307596A2 Method of producing conductor networks |
| 03/21/1989 | US4814293 Titanium-tungsten layer eteched with buffered hydrogen peroxide solution |
| 03/09/1989 | WO1989002212A2 Improved circuit board material and electroplating bath for the production thereof |
| 03/09/1989 | WO1989001990A1 Process for fabricating multilayer circuit boards |
| 03/08/1989 | EP0305943A2 Etching process for zirconium metallic objects |
| 03/01/1989 | EP0304687A2 Method for regenerating an acid solution |
| 03/01/1989 | CN1031402A Method for chemical treatment of aluminium surface |
| 02/21/1989 | US4806390 Coating with salt, immersion in rubbery anionic emulsion with pigment, baking |
| 02/21/1989 | US4806192 Method for etching materials |
| 02/21/1989 | CA1250210A1 Process for the treatment of iron- and zinc- containing hydrochloric acid pickles |
| 02/08/1989 | CN1030948A Thermoprinting technique of mould polyolefin copy |
| 02/07/1989 | US4803136 Method of manufacturing a safety vented container and product |
| 02/07/1989 | US4803098 Etching with lithium chloride and hydrochloric acid recovering uranium and recycling |
| 02/07/1989 | CA1249885A1 Membrane processes for metal recovery and pollution control in metal process industries |
| 02/01/1989 | EP0301783A2 Method for the recovery of metals from chloride solutions |
| 01/31/1989 | US4801360 Anodizing to provide a wear resistant oxide film |
| 01/26/1989 | DE3723821A1 Metallisches gleitschutzelement Metallic antiskid |
| 01/18/1989 | EP0299307A2 Foam retarding addition for acid liquids |
| 01/12/1989 | DE3822403A1 Verfahren zur herstellung von gedruckten leiterplatten Process for the preparation of printed circuit boards |
| 01/11/1989 | EP0298876A1 Magnesium-containing aluminium-based sheets, useful for the manufacture by deep-drawing and ironing of beverage cans, and process for the manufacture of these sheets |
| 01/11/1989 | EP0181343B1 Method of applying a protective layer on a surface to be subjected to etching |
| 01/10/1989 | CA1248491A1 Method and apparatus for regenerating an ammoniacal etching solution |
| 12/28/1988 | CN88103731A Process for production or recovery of acids from metalliferous solutions of such acid |
| 12/27/1988 | US4793896 Etching titanium nitride on titanium silicide surface |
| 12/21/1988 | EP0296147A1 Process for the recovery and/or regeneration of acids from metalliferous solutions of these acids |
| 12/15/1988 | WO1988009829A1 Etching of copper and copper bearing alloys |
| 12/15/1988 | EP0280708A4 Photoengraving articles and methods of producing such articles. |
| 12/14/1988 | CN88102931A Method for manufacturing shadow masks |
| 12/08/1988 | DE3734615C1 Manicure and pedicure files having a filing, grinding or polishing metal layer and process for the production thereof |
| 11/29/1988 | US4787958 Method of chemically etching TiW and/or TiWN |
| 11/23/1988 | EP0292057A1 Method of manufacturing a semiconductor comprising a titanium-tungsten layer |
| 11/23/1988 | EP0291929A2 Method of manufacturing shadow masks |
| 11/22/1988 | US4786362 Surface treatment, different aluminum alloys |
| 11/22/1988 | CA1245137A1 Method of regenerating permanganate etch bath |
| 11/15/1988 | US4784785 Copper etchant compositions |
| 11/15/1988 | US4784169 Apparatus for treating articles with solution to remove solids and then filtering the solution |
| 11/09/1988 | EP0289844A2 Support material and process for its manufacture |
| 11/08/1988 | CA1244328A1 Methods and compositions for removing copper and copper oxides from surfaces |
| 11/08/1988 | CA1244324A1 Process and structure for etching copper |
| 11/01/1988 | US4781791 Dots, printing, etching, coating, smoothness |
| 11/01/1988 | US4781205 Product guide for processing equipment |
| 10/25/1988 | US4780176 Method of wetting metals |
| 10/20/1988 | DE3711551A1 Optimisation of PCB etching - by sliding contacts and ohm-meters indicating start of through etching |
| 10/19/1988 | EP0287208A2 Process for manufacturing a corrosion-resistant vacuum-metallized article by etching the metal layer and applying a clear resinous coating |
| 10/04/1988 | US4775444 Applying chromic acid solution to copper circuit pattern coated with adhesion promoter |
| 09/20/1988 | US4772365 Method for etching materials |
| 09/20/1988 | US4772357 System for automatically etching pieces |
| 09/20/1988 | US4772349 Etching machines for manufacturing printed circuit boards |
| 09/20/1988 | US4772227 Electric plug connection with a coder device |
| 09/20/1988 | US4771659 Wet spraying abrasive mixture; chemical deburring or finishing |
| 09/13/1988 | CA1241898A1 Soluble surfactant additives for ammonium fluoride/hydrofluoric acid oxide etchant solutions |
| 09/07/1988 | EP0280804A1 Method of making metal molds and dies |
| 09/07/1988 | EP0280708A1 Photoengraving articles and methods of producing such articles |
| 08/30/1988 | US4767662 Copper etching process and product |
| 08/30/1988 | US4767661 Using liquid etchant |
| 08/30/1988 | US4767509 Nickel chloride, phosphoric and phosphorous acid |
| 08/30/1988 | US4767497 Process of forming enhanced heat transfer surfaces |
| 08/30/1988 | US4767496 Measuring electrical resistance and erosion on substrate; transmission by pulse-code-modulation and electromagnetic radiation |
| 08/30/1988 | US4767489 Computer aided printer-etcher |
| 08/23/1988 | US4766009 Locally irradiated area contacted with confined plating or etching solution |
| 08/23/1988 | CA1240951A1 Printing plates made of mechanically and electrochemically roughened aluminum |
| 08/16/1988 | CA1240596A1 Article die |
| 08/11/1988 | WO1988005990A1 Cladding of substrates with thick metal circuit patterns |
| 08/10/1988 | EP0277495A1 Process for making decorative or informative patterns on objects made of metal sheets with one or possibly several coatings |
| 08/03/1988 | CN87104592A Stress relief of single crystal superalloy articles |
| 08/02/1988 | US4761210 Superimposing masks, selective etching |
| 07/26/1988 | US4759817 Includes cup shaped basin and electric terminals |
| 07/20/1988 | EP0274776A1 Baths and process for chemically polishing stainless steel surfaces |
| 07/06/1988 | EP0273251A1 Method for controlling and checking an etch-process made by a plasma with active ions, radicals and/or neutral particles specially used for very high integrated semiconductor circuits |
| 07/05/1988 | US4755257 Applying supporting sheet to surface of metal sheet, applying photoresist, exposing pattern images, developing, etching, removing photoresist and supporting sheet |
| 07/05/1988 | CA1238987A1 Interferometric methods for device fabrication |
| 07/05/1988 | CA1238844A1 Ethyl glycol etch for processes using metal silicides |
| 07/05/1988 | CA1238842A1 Demetallizing apparatus |
| 06/30/1988 | DE3738996A1 Method and appliance for the deposition of copper from ammoniacal copper chloride solutions |
| 06/28/1988 | US4753849 Porous coating for enhanced tubes |
| 06/28/1988 | CA1238559A1 Process for producing copper through-hole printed circuit board |
| 06/22/1988 | CN86108399A Printed pattern corroding technique for stainless steel products |
| 06/15/1988 | EP0270658A1 Process for stripping tin or tin-lead alloy from copper |
| 06/15/1988 | EP0101446B1 Method of electroplating |
| 06/14/1988 | US4751162 Containing calcium to improve resolution |
| 06/14/1988 | US4750976 Easily removable black metal coatings |
| 06/08/1988 | EP0269996A1 Method of producing a buried region with a higher refractive index in a glass body by ion exchange |
| 06/02/1988 | WO1988003964A1 Liquid dispersion composition for, and method of, polishing ferrous components |
| 06/02/1988 | WO1988003963A1 Dry granular composition for, and method of, polishing ferrous compositions |
| 05/31/1988 | US4747907 Metal etching process with etch rate enhancement |
| 05/25/1988 | EP0268361A1 Solution, composition and process of refining metal surfaces |
| 05/24/1988 | US4746399 Printed circuits, electrodepositing a resin, etching |
| 05/24/1988 | US4746369 Peroxide selective stripping compositions and method |
| 05/11/1988 | EP0267166A2 Method of reducing the emission of nitrogen oxides from a liquid containing nitric acid |
| 05/11/1988 | EP0266518A1 Metal etching process with etch rate enhancement |
| 05/10/1988 | US4743795 Multi-graded aperture masks |
| 05/10/1988 | CA1236384A1 Dissolution of metals utilizing tungsten-diol combinations |
| 05/10/1988 | CA1236383A1 Etching of aluminum electrolytic capacitor foil |
| 05/04/1988 | EP0265764A1 Method and apparatus for radiation induced dry chemical etching |
| 05/03/1988 | US4741798 For printed circuit boards |
| 04/26/1988 | CA1235630A1 Etching techniques |