| Patents for C25F 3 - Electrolytic etching or polishing (4,256) |
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| 08/20/1991 | US5041198 Method and an apparatus for the electrochemical roughening of a metallic surface |
| 07/30/1991 | US5035780 Polishing then electropolishing with sulfuric acid, nitric acid, phosphoric acid mixture to sharpen into probe. |
| 07/16/1991 | US5032240 Method of activation of porous carbonaceous electrodes |
| 07/02/1991 | US5028304 Method of electrochemical machining of articles made of conducting materials |
| 06/27/1991 | WO1991008863A1 Methods of preparation of surfaces and applications thereof |
| 05/28/1991 | US5019228 Nuclear parts purification with deionized water electrolyte solution |
| 05/22/1991 | CN2077449U Infrared controlled constant-current double-ejection electrolytic polisher |
| 05/14/1991 | US5015346 Electrochemical method for defect delineation in silicon-on-insulator wafers |
| 05/07/1991 | US5013374 Permanent domain refinement by aluminum deposition |
| 05/07/1991 | US5013373 Method for treating electrical steel by electroetching and electrical steel having permanent domain refinement |
| 04/24/1991 | EP0423555A1 Process and apparatus for the electrochemical graining of a metal surface |
| 04/23/1991 | US5009756 Chemical method of avoiding a rainbow effect caused by the layer of oxide produced upon the brightening of parts of aluminum or aluminum alloys |
| 04/23/1991 | US5009722 Process for producing base material for an aluminum offset printing plate |
| 04/17/1991 | EP0422682A2 Method for producing support for printing plate |
| 03/13/1991 | EP0416099A1 Method for electrochemically treating articles made of conductive materials |
| 03/13/1991 | CN1049872A Cyclically usable and contamination-reduction process of copper sulfate used as chemical and electrochemical corrodent |
| 03/06/1991 | EP0415238A2 Method of producing support for planographic printing-plate |
| 03/05/1991 | US4997529 Electrolytic process and apparatus for forming pattern on surface of metallic object |
| 03/05/1991 | CA1280997C Process for the electrochemical roughening of aluminum for use inprinting plate supports |
| 02/27/1991 | EP0414189A1 Method of producing aluminum support for printing plate |
| 02/26/1991 | US4995951 Brightening method |
| 02/06/1991 | EP0411061A1 Fe-Mn-Al-C ALLOYS AND THEIR TREATMENT. |
| 01/16/1991 | EP0407476A1 A steel wire for the reinforcement of elastomers |
| 01/10/1991 | DE3921545A1 Decorative surface pattern |
| 01/09/1991 | EP0407326A1 Method for electroplating nickel onto titanium alloys |
| 01/02/1991 | EP0405006A2 Process for manufacture of decorative surfaces |
| 12/12/1990 | EP0401601A1 Electrochemical graining of aluminum or aluminum alloy surfaces |
| 12/11/1990 | US4977038 Alloying silver and gold; applying electrochemical potential |
| 12/06/1990 | EP0416099A4 Method for electrochemically treating articles made of conductive materials. |
| 12/06/1990 | DE3917425A1 Prodn. of roughened capacitor foil - involving electrolytic pretreatment before foil roughening |
| 12/05/1990 | CA2018180A1 Electrochemical graining of aluminum of aluminum alloy surfaces |
| 12/04/1990 | US4975335 Fe-Mn-Al-C based alloy articles and parts and their treatments |
| 11/28/1990 | EP0399172A2 Process for obtaining coloured surfaces on pieces of aluminium or pieces of aluminium alloys |
| 11/28/1990 | EP0399170A2 Polishing process |
| 11/28/1990 | EP0399169A2 Chemical process to avoid a rainbow effect, provoked by an oxide layer that is caused during the polishing of pieces of aluminium or pieces of aluminium alloys |
| 11/06/1990 | US4968388 Continuous processing, chemically and electrochemically metallizing a nonconductor foil |
| 10/31/1990 | DE3914000A1 Electrolytically roughening aluminium foil prodn. - by treating with pulsed current in etching electrolyte contg. chloride(s) |
| 10/30/1990 | US4966663 Method for forming a silicon membrane with controlled stress |
| 10/24/1990 | EP0393415A1 Electrolytic etching apparatus and method for marking metal tubes with sequential identification numbers |
| 10/24/1990 | EP0393192A1 Device for electrochemical treatment of articles |
| 10/19/1990 | CA2014834A1 Electrolytic etching apparatus and method for marking metal tubes with sequential identification numbers |
| 10/18/1990 | DE3911814A1 Surface roughened aluminium foil mfr. - by raising through etching bath with initial electrodes compartment followed by electrolytic pulsed current compartment |
| 10/17/1990 | EP0392738A1 Micro- and nano-porous metallic structures |
| 10/14/1990 | CA2014524A1 Micro- and nano-porous metallic structures |
| 10/09/1990 | CA1275068A1 Process for the electrochemical roughening of aluminum for use in printing plate supports |
| 10/03/1990 | EP0390033A1 Process and apparatus for roughening a support for photosensitive layers |
| 09/30/1990 | CA2013299A1 Process and apparatus for roughening a substrate for photosensitive layers |
| 09/18/1990 | CA1274212A1 Apparatus for internally electropolishing tubes |
| 08/29/1990 | CN1009376B Electro-chemical corrosion of circular silicon cup |
| 08/01/1990 | CN1044308A Apparatus for electrochemical treatment of products |
| 08/01/1990 | CN1044307A Process for electrochemical treatment of products of conductive materials |
| 07/31/1990 | US4945004 Base material for an aluminum offset printing plate |
| 07/31/1990 | US4944856 Electrolytic etching apparatus and method for marking metal tubes with sequential identification numbers |
| 07/04/1990 | CN1043536A Simple rapid engraving technology on mietal materials |
| 06/27/1990 | CN1043352A Electrochemical erasing-cutting method and cathodic erasing head thereof |
| 06/26/1990 | CA1270791A1 Electrochemical roughening of aluminum for printing plates in nitric acid and complex fluorine compound |
| 06/19/1990 | US4935112 Inducing current through strand without direct contact; surface treatment; demetallization; cleaning |
| 05/29/1990 | US4929326 Electrolytic treatment apparatus |
| 05/21/1990 | CA2002771A1 Apparatus and method for polishing a plumbing or electrical fixture |
| 05/15/1990 | US4925538 Method of electrolytic treatment of metals |
| 05/09/1990 | EP0367750A2 Process for producing a silicon membrane with controlled mechanical stress |
| 05/03/1990 | WO1990004664A1 Method for electrochemically treating articles made of conductive materials |
| 04/25/1990 | EP0364688A1 Process and apparatus for manufacturing partially metallised foils |
| 04/24/1990 | US4919774 Controlling current ratio in electrolytic current by using auxiliary electrode; surface roughening metal web |
| 04/19/1990 | WO1990004047A1 Method relating to the manufacturing of cold rolled strips and sheets of stainless steel |
| 04/12/1990 | DE3834218A1 Method for electrolytic etching of aluminium foils |
| 04/10/1990 | US4915800 Process for electrolytically surface-roughening aluminum support |
| 03/07/1990 | EP0165318B1 Process for producing anode foil for use in electrolytic aluminum capacitor |
| 03/03/1990 | WO1990004665A1 Device for electrochemical treatment of articles |
| 02/27/1990 | US4904312 Mild acid; heat resistance; reduced power loss |
| 02/20/1990 | US4902389 Process for producing aluminum support for printing plate |
| 02/20/1990 | US4902388 Method for electroplating nickel onto titanium alloys |
| 02/08/1990 | WO1990001080A1 A steel wire for the reinforcement of elastomers |
| 01/31/1990 | EP0352594A1 Electropolishing process for decontamination purposes |
| 01/30/1990 | US4897168 Process and arrangement for production of printing plate support |
| 01/25/1990 | WO1990000630A1 Fe-Mn-Al-C ALLOYS AND THEIR TREATMENT |
| 01/24/1990 | EP0351909A1 A steel wire for the reinforcement of elastomers |
| 01/24/1990 | EP0194317B1 Method of producing electrolytic capacitors. |
| 01/24/1990 | CN1039075A Pattern transplanting and engraving process of inside wall of die cavity |
| 01/17/1990 | CN1006500B Resistance element for wound-type variable resistors and method |
| 01/10/1990 | EP0349983A2 Electrolytic treatment apparatus |
| 11/21/1989 | US4882019 Immersion in electrolyte |
| 10/26/1989 | DE3812142A1 Process and appliance for electrolytic etching of aluminium foils |
| 10/11/1989 | CN1005420B Stainless steel coating with double color by single coloration |
| 10/10/1989 | US4872946 Method of manufacturing supports for lithographic printing plate |
| 09/27/1989 | EP0334222A1 Permanent domain refinement by aluminum deposition |
| 09/27/1989 | EP0334221A2 Method for treating electrical steel by electroetching and electrical steel having permanent domain refinement |
| 09/26/1989 | CA1259947A1 Laser-enhanced jet-plating and jet-etching: high speed maskless patterning method |
| 07/11/1989 | US4846944 Beryllium mirrors, etching with phosphoric acid |
| 07/05/1989 | EP0323155A1 Method for producing low iron loss grain oriented silicon steel sheets |
| 06/20/1989 | US4840713 Process for the electrochemical roughening of aluminum for use in printing plate supports |
| 06/20/1989 | CA1256059A1 Electrochemical roughening of aluminum for printing plates in hydrochloric acid and complex fluoride compound |
| 06/20/1989 | CA1256058A1 Electrochemical roughening of aluminum for printing plates in hydrochloric acid and hydrofluoric acid |
| 06/20/1989 | CA1256057A1 Process for electrolytic treatment of metal by liquid power feeding |
| 06/20/1989 | CA1256056A1 Electrolytically deburring laminated cores under relative motion of workpiece |
| 06/08/1989 | DE3838334A1 Process for the production of an aluminium base for a lithographic printing plate |
| 05/31/1989 | EP0317866A1 Process for producing aluminum support for printing plate |
| 05/18/1989 | DE3836810A1 Process for the production of an aluminium base (support, carrier) for a printing plate |
| 05/16/1989 | US4830719 Rubbing to increase porosity; supplying with electrolyte, electric current |
| 05/09/1989 | US4828644 Etching device for semiconductor wafers |