| Patents for C23F 1 - Etching metallic material by chemical means (16,062) |
|---|
| 04/05/1977 | US4015615 Fluid application system |
| 03/22/1977 | US4013498 Etching apparatus for accurately making small holes in thick materials |
| 03/22/1977 | US4013039 Wet processing PH control |
| 03/08/1977 | US4011123 Apparatus for etching a continuously moving thin metal strip |
| 02/22/1977 | US4009299 Trichloroacetic acid, surfactant |
| 02/15/1977 | US4008111 Aluminum nitride |
| 02/08/1977 | US4007037 Composition and method for chemically etching copper elements |
| 02/01/1977 | US4006067 Chromium, porous anode |
| 01/25/1977 | US4004956 Aromatic nitro compound, inorganic acid, a thiourea, organic acid, haloacetic acid |
| 01/18/1977 | US4003772 Method for preparing thin film integrated circuit |
| 01/04/1977 | US4001061 Single lithography for multiple-layer bubble domain devices |
| 12/28/1976 | US3999564 Continuous etching and etched material recovery system |
| 12/21/1976 | US3998677 Technique for using solder etch resist in generation of patterns on printed wiring boards |
| 12/14/1976 | US3997380 Method of engraving a conductive layer |
| 11/16/1976 | US3992235 Hydrofluoric acid, hydrogen peroxide, tetrazolium compound, alcohol, surfactants |
| 11/16/1976 | US3992234 Powderless etching method for magnesium printing plates |
| 11/09/1976 | US3991231 Process for the production of circuit boards by a photo-etching method |
| 11/09/1976 | US3990982 Ammonium bifluoride, hydrogen peroxide, water |
| 11/09/1976 | US3990462 Substrate stripping and cleaning apparatus |
| 10/19/1976 | US3986970 Solution for chemical dissolution treatment of tin or alloys thereof |
| 08/31/1976 | US3977926 Etching semiconductor wafers |
| 08/31/1976 | US3977925 Method of localized etching of Si crystals |
| 08/31/1976 | US3977071 High depth-to-width ratio etching process for monocrystalline germanium semiconductor materials |
| 08/24/1976 | US3976524 Planarization of integrated circuit surfaces through selective photoresist masking |
| 08/24/1976 | US3976500 Dicarboxylic acid salts, persulfate, a urea, ammonium hydroxide |
| 08/10/1976 | US3973987 Reverse osmosis |
| 07/27/1976 | US3971682 Etching process for accurately making small holes in thick materials |
| 07/20/1976 | US3970023 Tooling arrangement for end closure scoring |
| 07/06/1976 | US3967632 Arrangement for the fluid treatment, especially etching, of objects in assembly-line-like fashion |
| 06/29/1976 | US3966517 Manufacturing semiconductor devices in which silicon slices or germanium slices are etched and semiconductor devices thus manufactured |
| 06/22/1976 | US3964957 Apparatus for processing semiconductor wafers |
| 06/22/1976 | US3964956 System for maintaining uniform copper etching efficiency |
| 06/08/1976 | US3962005 Method for etching shadow mask and regenerating etchant |
| 06/08/1976 | US3961877 Reinforced wafer basket |
| 06/01/1976 | US3960741 Hydrofluoric acid, nitric acid, lactic acid |
| 06/01/1976 | US3960560 Silver halide emulsion |
| 06/01/1976 | US3960559 Method of making a semiconductor device utilizing a light-sensitive etching agent |
| 05/25/1976 | US3959046 Process for the automatic checking and control of etching machines |
| 05/25/1976 | US3958984 Alkali cyanide, nitro aromatic |
| 05/25/1976 | US3958587 Manifold for fluid distribution and removal |
| 05/18/1976 | US3957669 Benzene sulphinic acid as etchant |
| 05/18/1976 | US3957505 Gold reclamation process |
| 05/04/1976 | US3954582 Process for producing grooves in metallic bodies |
| 04/27/1976 | US3953263 Process for preventing the formation of nitrogen monoxide in treatment of metals with nitric acid or mixed acid |
| 04/20/1976 | US3951711 System for maintaining uniform copper etching efficiency |
| 04/20/1976 | US3951710 Using a cupric tetraamine compound and ammonium hydroxide |
| 04/06/1976 | US3949131 Photomasks with antistatic control |
| 03/23/1976 | US3945865 In nitric acid baths containing hydrogen peroxide |
| 03/16/1976 | US3944496 Composition for chemical milling refractory metals |
| 02/17/1976 | US3939203 Certain substituted 2-hydroxybenzophenoximes and the process of extracting copper therewith |
| 02/17/1976 | US3939089 Etching solutions for copper and copper alloys and etching process using the same |
| 02/10/1976 | US3938194 Method of and apparatus for obtaining synchronous movement between two media |
| 02/03/1976 | US3936539 Pack aluminizing, aluminum halide energizer |
| 02/03/1976 | US3936332 Diazine, peroxysulfate, halogen compound |
| 01/27/1976 | US3935118 Nitric acid system for etching magnesium plates |
| 01/27/1976 | US3935052 Acid engraving machine device |
| 01/27/1976 | US3935041 Method for treatment fluid application and removal |
| 01/27/1976 | US3935005 Cyanide, lithium compound, bismuth or lead compound, nitrobenzene compound |
| 01/20/1976 | US3933982 Method of stabilizing acid aqueous solutions of hydrogen peroxide |
| 01/20/1976 | US3933544 Ammoniacal solution containing chloride ions |
| 01/20/1976 | US3933163 Spray etching apparatus |
| 01/06/1976 | US3931030 Etching composition for etching nickel screen rolls or plates |