| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 205665000 | Aperture making | 6 |
| 20090277803 | METHOD AND TOOL FOR FORMING NON-CIRCULAR HOLES USING A SELECTIVELY COATED ELECTRODE - An electrochemical machining process for forming a non-circular hole from a substantially circular hole within a workpiece using an electrode. The electrode is made of an electrically conductive material and has insulated areas in which the electrically conductive material is coated with an insulating material, and exposed areas of metal or conductive material. The insulated areas and exposed areas extending in rows substantially along a longitudinal axis of the electrode. The electrode is first positioned in a substantially circular hole. An electric current is then applied to the electrode to electrochemically remove a predetermined amount of material from the substantially circular hole to form a non-circular hole. A variety of different non-circular shapes are achievable using the process. | 11-12-2009 |
| 20130098774 | Method and Apparatus for a Porous Metal Electrospray Emitter - An ionic liquid ion source can include a microfabricated body including a base and a tip. The microfabricated body can be formed of a porous metal compatible (e.g., does not react or result in electrochemical decaying or corrosion) with an ionic liquid or a room-temperature molten salt. The microfabricated body can have a pore size gradient that decreases from the base of the body to the tip of the body, so that the ionic liquid can be transported through capillarity from the base to the tip. | 04-25-2013 |
| 20140262820 | Fabrication of Nanopores In Atomically-Thin Membranes By Ultra-Short Electrical Pulsing - In a method for forming nanopores, two opposing surfaces of a membrane are exposed to an electrically conducting liquid environment. A nanopore nucleation voltage pulse, having a first nucleation pulse amplitude and duration, is applied between the two membrane surfaces, through the liquid environment. After applying the nanopore nucleation voltage pulse, the electrical conductance of the membrane is measured and compared to a first prespecified electrical conductance. Then at least one additional nanopore nucleation voltage pulse is applied between the two membrane surfaces, through the liquid environment, if the measured electrical conductance is no greater than the first prespecified electrical conductance. At least one nanopore diameter tuning voltage pulse, having a tuning pulse voltage amplitude and duration, is applied between the two membrane surfaces, through the liquid environment, if the measured electrical conductance is greater than the first prespecified electrical conductance and no greater than a second prespecified electrical conductance. | 09-18-2014 |
| 20150090605 | ELECTRO-POLISHING AND POROSIFICATION - Forming a porous layer on a silicon substrate is disclosed. Forming the porous layer can include placing a silicon substrate in a first solution and conducting a first current through the silicon substrate. It can further include conducting a second current through the silicon substrate resulting in a porous layer on the silicon substrate. | 04-02-2015 |
| 20150090606 | ENHANCED POROSIFICATION - Forming a porous layer on a silicon substrate. Forming the porous layer can include placing a first silicon substrate in a solution, where a first electrode is within a threshold distance to an edge of the silicon substrate. It can further include conducting a first current through the silicon substrate, where the first electrode can be positioned relative to the edge allowing for substantially uniform porosification along the edge of the first silicon substrate. | 04-02-2015 |
| 20160074951 | ELECTROCHEMICAL MACHINING TOOL, ELECTROCHEMICAL MACHINING SYSTEM, AND METHOD FOR MANUFACTURING PERFORATED MEMBER - An electrochemical machining tool ( | 03-17-2016 |
