| Patents for C23F 1 - Etching metallic material by chemical means (16,062) |
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| 04/26/1994 | US5306431 Treatment with hydrogen peroxide in acidic pH range; measurement of redox potential |
| 04/26/1994 | CA1328842C Process for recovery of metals from metal / plastic waste and the like |
| 04/21/1994 | DE4310365C1 Regenerating aq. etching bath - using electrodialysis cells having cation exchange membranes |
| 04/19/1994 | US5305043 Method of and apparatus for producing a strip of lead frames for integrated circuit dies in a continuous system |
| 04/19/1994 | US5304284 Methods for etching a less reactive material in the presence of a more reactive material |
| 04/19/1994 | US5304261 Heat treatment, quenching, nonstress thinning, bending and welding |
| 04/19/1994 | CA1328598C Polishing baths and process for the chemical polishing of stainless steel surfaces |
| 04/14/1994 | DE4233703A1 Silicon@ injection plate mfr. - has both sides of bottom plate etched simultaneously with the use of etching masks |
| 04/12/1994 | US5302234 Chemical machining to form non-planar cutting tools |
| 04/06/1994 | EP0590876A2 Selective wet etching of silicon and silicon compounds |
| 03/31/1994 | WO1994007110A1 Optical endpoint determination during the processing of material layers |
| 03/31/1994 | DE4232636A1 Roughening of surface of aluminium@ foil - in which etching tunnels are formed |
| 03/29/1994 | US5298352 Emulsion printing plates and evacuation channels |
| 03/29/1994 | US5298117 Metallic electrical interconnectors of multilayer elements using hydrogen fluoride, cupric chloride and chloride salt as etchant |
| 03/29/1994 | US5298116 Process for producing a matted embossing surface for an embossing tool for making press-formed laminates |
| 03/24/1994 | DE4331914A1 Etching appts. - with the nitrite ion concentration in the etchant controlled on the basis of the potential difference between two submerged electrodes |
| 03/24/1994 | DE4231800A1 Identification label or plate to mark objects - leaves undissolvable traces on object after removal from it |
| 03/22/1994 | US5296096 Etchant for production of electrode plate structure for liquid crystal display device |
| 03/15/1994 | US5294519 Copper clad lamination of photosensitive coating on plates |
| 03/15/1994 | US5294476 Patterning process and microparticles of substantially the same geometry and shape |
| 03/15/1994 | US5294297 Method for processing surface of work roll |
| 03/15/1994 | US5294259 Fluid treatment device |
| 03/10/1994 | DE4229435A1 Solvent and molybdenum@ recovery in dissolution of core in mfr. of incandescent lamp tungsten@ wire coil - by cyclic process using constant temp. in reactor and adjustment outside reactor for optimum results |
| 03/08/1994 | US5292625 Projecting light through prismatic element |
| 03/01/1994 | US5290384 Apparatus for controlled spray etching |
| 03/01/1994 | US5290382 Methods and apparatus for generating a plasma for "downstream" rapid shaping of surfaces of substrates and films |
| 03/01/1994 | US5289639 Fluid treatment apparatus and method |
| 02/23/1994 | EP0583889A2 Method of etching sendust and method of pattern-etching sendust and chromium films |
| 02/23/1994 | CN1082511A Process and apparatus for treating copper chloride etching waste liquor |
| 02/22/1994 | US5288323 Apparatus with a shunt system for processing printed circuit board substrates |
| 02/18/1994 | CA2101973A1 Solution and method for removing zinc from the surface of galvanized metal |
| 02/16/1994 | EP0582920A2 Fluid treatment apparatus and method |
| 02/15/1994 | US5286345 Photolithographic etching process for fabricating wire screen disks for cryogenic cooler regenerators |
| 02/12/1994 | CA2101902A1 Fluid treatment apparatus and method |
| 02/08/1994 | US5284554 Electrochemical micromachining tool and process for through-mask patterning of thin metallic films supported by non-conducting or poorly conducting surfaces |
| 02/01/1994 | US5282926 Method of anisotropically etching monocrystalline, disk-shaped wafers |
| 02/01/1994 | US5282921 Apparatus and method for optimally scanning a two-dimensional surface of one or more objects |
| 01/26/1994 | EP0580368A2 Studless thin film magnetic head and process for making the same |
| 01/26/1994 | EP0580050A1 Process for making a polymer/metal or a polymer/semi-conductor band |
| 01/26/1994 | EP0580036A2 Process for making microstructures |
| 01/26/1994 | EP0579610A1 Novel demetallizing procedure |
| 01/25/1994 | US5281511 Process for producing an embossing die in roll form |
| 01/25/1994 | US5281318 Process for processing a waste etching solution containing a fluorine component and an ammonia component to recover valuables therefrom |
| 01/19/1994 | EP0579380A1 Apparatus and method for scanning a two-dimensional surface of one or more objects |
| 01/19/1994 | EP0578710A1 Process for cleaning a photographic process device. |
| 01/18/1994 | US5279923 Generating an acid when exposured to actinic radiation |
| 01/18/1994 | US5279702 Anisotropic liquid phase photochemical copper etch |
| 01/18/1994 | US5279641 Method for concurrent production of copper powder and a metal chloride |
| 01/12/1994 | EP0578040A2 Fluid treatment apparatus and method |
| 01/12/1994 | EP0470957B1 Etchant solution for photoresist-patterned metal layers |
| 01/11/1994 | US5278683 Electrode plate structure for liquid crystal color display device |
| 01/11/1994 | US5277756 Post fabrication processing of semiconductor chips |
| 01/11/1994 | US5277715 Removing the adherent particles by filtration |
| 01/05/1994 | EP0577262A2 Use of oxalyl chloride to form chloride-doped silicon dioxide films on silicon substrates |
| 01/04/1994 | US5275695 Depositing two layers of radiation-sensitive resist material; patterning to form recesses; etching |
| 01/04/1994 | US5275694 Process for production of copper through-hole printed wiring boards |
| 01/04/1994 | US5275691 Method for treating a surface of an aluminum substrate for a printing plate |
| 01/04/1994 | US5275690 Method and apparatus for wet chemical processing of semiconductor wafers and other objects |
| 12/29/1993 | EP0576402A1 Electrodes of improved service life |
| 12/26/1993 | CA2097789A1 Electrodes of improved service life |
| 12/22/1993 | EP0575292A1 Process for manufacturing substrates with through-holes |
| 12/22/1993 | EP0575125A1 Method and apparatus for wet chemical processing of semiconductor wafers and other objects |
| 12/21/1993 | US5271953 System for performing work on workpieces |
| 12/21/1993 | US5271804 Etchant/deoxidizer for aluminum |
| 12/21/1993 | US5271798 Method for selective removal of a material from a wafer's alignment marks |
| 12/21/1993 | CA2004796C Inhibited composition and method for stripping tin, lead or tin-lead alloy from copper surfaces |
| 12/16/1993 | CA2098411A1 Method for producing substrates with passages |
| 12/15/1993 | EP0574113A1 Process and apparatus for treating copper chloride etching waste liquor |
| 12/07/1993 | US5268332 Method of integrated circuit fabrication having planarized dielectrics |
| 12/01/1993 | EP0571832A2 Imides and their salts and their use as surface active agents |
| 11/30/1993 | US5266386 Etchable metal suppored on web of microwave transparent material |
| 11/30/1993 | US5266152 Silicon with hydrofluoric acid and nitric acid while adding nitrite ion |
| 11/30/1993 | US5265670 Convection transfer system |
| 11/27/1993 | CA2096816A1 Imides and their salts, as well as their use |
| 11/25/1993 | WO1993023493A1 Etching compositions |
| 11/23/1993 | US5264123 Acid recycling system |
| 11/17/1993 | CN1078503A Soaking method for detaching blade of brazed shank and apparatus thereof |
| 11/16/1993 | US5262040 Pretreatment by degreasing, annealing, etching to form a rough surface for enhanced adhesion for coating, used as anode |
| 11/10/1993 | EP0569117A2 Producing articles by chemical vapor deposition |
| 11/10/1993 | EP0568696A1 PRODUCTION OF CLEAN, WELL-ORDERED CdTe SURFACES USING LASER ABLATION. |
| 11/09/1993 | US5259979 Process for regeneration of cleaning compounds |
| 11/09/1993 | US5259926 Method of manufacturing a thin-film pattern on a substrate |
| 11/09/1993 | US5259920 Involving an indicator layer of metal formed on surface of monitor substrate |
| 11/02/1993 | US5258109 Forming hydroxide and acid; insolubilizing |
| 11/02/1993 | US5258098 Aircraft |
| 10/27/1993 | EP0380545B1 Improved circuit board material and electroplating bath for the production thereof |
| 10/26/1993 | US5256247 Liquid etchant composition for thin film resistor element |
| 10/20/1993 | EP0566286A1 Photoresist stripping method |
| 10/19/1993 | US5254209 Method of making micromechanical components |
| 10/14/1993 | WO1993019887A1 Methods of manufacturing perforated foils |
| 10/14/1993 | DE4311484A1 Forming conducting structure on surface of substrate - comprises forming dielectric layer on substrate, forming conducting and protective layers, then removing parts of protective layer |
| 10/13/1993 | CN1077308A Method for preparing ferromagnetic fluid form waste pickle |
| 10/07/1993 | DE4211197A1 Skin pass rolls texturing for surface topography formation - using chemical etching engraving and increasing depth of texture by grinding, for improved tribology |
| 10/06/1993 | EP0564364A2 Method for selectively exposing an uneven substrate surface |
| 10/06/1993 | EP0564059A1 Surgical needle |
| 10/06/1993 | EP0563744A2 Method of electrochemical fine processing |
| 10/06/1993 | EP0491020B1 Etching solution |
| 10/05/1993 | US5250275 Process for separating silicon compounds contained in a hydrochloric bath used for pickling |
| 10/05/1993 | CA2022400C Method for improving insulation resistance of printed circuits |
| 09/29/1993 | EP0562848A2 Surface treating method |