Did You Know...
...that while attempting to develop a super strong glue, 3M employee Spencer Silver accidentally developed a glue that was so weak it would barely hold two pieces of paper together? However, his colleague Art Fry needed the glue. Fry sang with his church choir and marked the pages of his hymnal with small scraps of paper that often fell out. He used Silver's glue to hold the papers in place. Today we call this invention Post-it Notes.
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| Number | Title | Issue Date |
| 7824247 | Portable rapid and quiet drill A hand-held drilling device, and method for drilling using the device, has a housing, a transducer within the housing, with the transducer effectively operating at ultrasonic frequencies, a rotating motor component within the housing and rigid cutting end-effector r... | 11/02/2010 |
| 7695351 | Low-stress polishing device A low-stress polishing device includes a base; a plurality of actuators mounted to the base and spaced from each other in a predetermined interval, each of the actuators having a drive shaft and a buffer spring connected with the drive shaft for providing the drive ... | 04/13/2010 |
| 7563155 | Cutting apparatus with ultrasonic transducer A cutting apparatus includes a blade mount supporting a first ultrasonic transducer for imparting ultrasonic vibrations to a cutting blade. The blade mount includes an annular flange having a grip surface on an outer circumferential side surface thereof for gripping... | 07/21/2009 |
| 7346973 | Processing cell of automatic machining system and automatic honing system A processing cell of automatic machining system configured in that it is easy to decide or change the number of steps and to design, and to reduce the installation cost. The control unit of the processing cell comprises an operation data storing means for storing ev... | 03/25/2008 |
| 7316600 | Metal working method to reduce thermal damage A method for grinding a feature in a work-piece is set forth which includes the step of rotating a grinding wheel about a first axis. The method also includes the step of traversing the rotating grinding wheel and a work-piece relative to one another along a second ... | 01/08/2008 |
| 7303461 | Method of machining airfoils by disc tools A method for machining a rotor having a disc and a plurality of integral airfoils projecting outwardly from the disc, according to one aspect of the invention, comprises a step of machining each airfoil with a disc tool having a grinding periphery thereof adapted fo... | 12/04/2007 |
| 7219419 | Component mounting apparatus including a polishing device Component (3) is pressed onto a circuit board (4) so that their respective metal interconnects (5), (6) are in close contact with each other, and ultrasonic vibration is applied to the suction nozzle (14) holding the component (... | 05/22/2007 |
| 7175506 | Tool unit for ultrasonically assisted rotary machining The tool unit for the ultrasonically assisted rotary machining of a workpiece comprises a converter (23) including at least one electroacoustic transducer (22) for generating and transmitting ultrasonic oscillations, a tool (30) that is coupled ... | 02/13/2007 |
| 7163442 | Method of making micro titer plates and micro titer plates made thereby The micro titer plates, especially for micro reaction systems used in biotechnology, each have an array of special microstructures, which typically include micro cups and micro channels with different cross-sections. These microstructures are introduced into a prefe... | 01/16/2007 |
| 7156189 | Self mountable and extractable ultrasonic/sonic anchor Self drilling anchors and related methods and apparatus. In one embodiment an apparatus comprises a drill bit, a hammer mechanism for hammering the drill bit in a first direction and in a second direction, and a selection mechanism for controlling whether, at a give... | 01/02/2007 |
| 7115016 | Apparatus and method for mechanical and/or chemical-mechanical planarization of micro-device workpieces Planarizing machines and methods for mechanical and/or chemical-mechanical planarization of micro-device workpieces are disclosed herein. In one embodiment, a method for polishing a workpiece includes determining an estimated frequency of serial defects in a workpie... | 10/03/2006 |
| 7066798 | Adapter for grinding machine Disclosed is an adapter for grinding machine comprising: a grinding shaft sleeve of cylindrical shape whose one end is open and having at least one through hole formed at a selected position of an outer circumference; a grinding shaft rotatably and movably fitted in... | 06/27/2006 |
| 7063596 | Vibratory material removal system, tool and method Material is removed from objects to be marked or machined by applying tools having cutouts arranged in a pattern on the objects, filling the cutouts with abrasive particles, pouring a molten metal over the tools to solidify as a backing, and then ultrasonically vibr... | 06/20/2006 |
| 7017597 | Megasonic cleaning apparatus for fabricating semiconductor device A megasonic cleaning apparatus is provided for removing contamination particles on a wafer. The megasonic cleaning apparatus includes a piezoelectric transducer and an energy transfer rod. The piezoelectric transducer is for generating megasonic energy. The energy t... | 03/28/2006 |
| 6942554 | Apparatus and process for polishing a substrate An apparatus for polishing a substrate with an optical surface. The apparatus contains a polishing pad and and a device for oscillating the polishing pad while simultaneously contacting it with at least 90 percent of said optical surface. ... | 09/13/2005 |
| 6932682 | Method and apparatus for ultrasonic machining A method for machining a component. The method includes providing a machining apparatus configured to induce vibrations such that a vibration direction of the machining apparatus is substantially aligned with respect to a machining direction of the component, and vi... | 08/23/2005 |
| 6913528 | Low amplitude, high speed polisher and method A method and apparatus for improving uniformity of the rate of removal of material from the surface of a workpiece, such as semiconductor substrate, by polishing. In accordance with the invention, the workpiece is subjected to a vibratory polishing method, and optio... | 07/05/2005 |
| 6872125 | Tool for smoothing a workpiece A tool for abrading a workpiece to smooth the surface thereof. The tool has a shank portion and a working portion. The working portion has a smooth and non-abrading surface, with one or more depressions formed therein. Each depression includes an abrading mechanism.... | 03/29/2005 |
| 6872124 | Superfinishing apparatus The superfinishing apparatus according to the present invention includes a frame 51 for holding the entirety of the apparatus, a cam shaft 52 attached to the frame 51 so as to rotate freely, first and second eccentric cams 53, 54 which ar... | 03/29/2005 |
| 6811468 | Polishing apparatus A polishing apparatus and a polishing method which can reduce the amount of consumption of the polishing agent and scratches caused on the object to be polished due to an increase of the particle size in the polishing agent. The polishing apparatus has a polishing h... | 11/02/2004 |
| 6726531 | Abrasive tool having safe and active areas A tool for abrading a workpiece to smooth the surface thereof. In one embodiment, the tool is an ultrasonic tip (12) having plural grooves (16) formed in a smooth surface (14) thereof. Each groove (16) includes an abrasive material (24... | 04/27/2004 |
| 6682396 | Apparatus and method for linear polishing A linear polisher for polishing a substrate that always provides a fresh abrasive surface for polishing and a method for linear polishing a substrate are described. In the linear polisher, a length of a polishing pad is supported on a pair of rollers whic... | 01/27/2004 |
| 6656020 | Polishing apparatus and polishing method A polishing apparatus and a polishing method which can reduce the amount of consumption of the polishing agent and scratches caused on the object to be polished due to an increase of the particle size in the polishing agent. The polishing apparatus has a ... | 12/02/2003 |
| 6612906 | Vibratory material removal system and method Material is removed from objects to be marked or machined by applying apertured masks having cutouts arranged in a pattern on the objects, applying a liquid mixture of abrasive particles over the masks, and then ultrasonically vibrating the mixture to pro... | 09/02/2003 |
| 6497164 | Ultrasonic vibration cutting tool and production method thereof A ultrasonic vibration cutting tool which can optimize materials as in a separate type and can improve the transmission efficiency of ultrasonic vibration as in an integrated type. The ultrasonic vibration cutting tool comprises a ring-shaped projection a... | 12/24/2002 |
| 6379858 | Sonic honing of substrates A honing means produces sonic waves that suspend and propel a honing medium against a surface of a substrate. The honing medium impinges on the surface of the substrate and alters the substrate's surface roughness. The substrate and the honing means are p... | 04/30/2002 |
| 6336844 | Method and machine for the ultrasonic peening of parts on a wheel The invention relates to a method and machine for so-called "ultrasonic" peening employing a mist of microbeads inside an active chamber 30c for peening parts 21 on a wheel 19, ie blades on a rotator. The periphery of the wheel 19 is brought simultaneousl... | 01/08/2002 |
| 6315644 | Apparatus and process for supplying abrasives for use in the manufacture of semiconductors An apparatus of this invention for supplying an abrasive for use in the manufacture of semiconductors comprises a storage tank of the abrasive and a supply line for guiding the abrasive from the storage tank to a nozzle for supplying the abrasive to an ob... | 11/13/2001 |
| 6270397 | Chemical mechanical polishing device with a pressure mechanism The present invention provides a CMP device with a pressure-controlling mechanism comprising a rotating polishing plate, a slurry supplying system for supplying slurry, a rotating carrier that holds and rotates a silicon wafer such that the wafer surface ... | 08/07/2001 |
| 6250188 | Ultrasonic vibration cutting method and apparatus An ultrasonic vibration cutting method comprising mounting and fixing a part to be cut on a mounting table, moving down an ultrasonic vibration rotation unit, stopping the downward movement of the ultrasonic vibration rotation unit when the cutting blade ... | 06/26/2001 |
| 6174224 | Method and apparatus for cooling and/or lubrication of a work head The invention relates to a workhead for mechanical working of materials. This invention is directed to metal working machines and is adaptable for use in the mechanical working of metals and plastics, involving the use of liquid lubricants and/or coolants... | 01/16/2001 |
| 6146250 | Process for forming a semiconductor device Vibrating and oscillating rates can be dynamically changed during polishing to achieve an optimal polishing process. A semiconductor device substrate (34) has a first layer with a first film (12) and a second film (10) that overlies the first film (12), w... | 11/14/2000 |
| 6146245 | Method of and device for machining flat parts A method of machining flat parts, includes the use of two permanent magnets which are located opposite to and spaced from one another so as to form a magnetic field with a magnetic flux extending perpendicular to the magnets, placing a flat part in the ma... | 11/14/2000 |
| 6036578 | Numerical control unit incorporating ultrasonically oscillating tool The invention provides a NC unit provided with an ultrasonically oscillating tool, capable of indenting pits at equal pitches and detecting an amount of wastage of a stylus. In the NC unit, a PLL circuit outputs an ultrasonic signal S at a frequency equiv... | 03/14/2000 |
| 5993300 | Ultrasonic vibration composite processing tool An ultrasonic vibration composite processing tool is disclosed wherein at least one small-sized processing member is arranged for carrying out processing of a processed material while applying vibration to the processed material, to thereby ensure stable ... | 11/30/1999 |
| 5984765 | Ultrasonic vibration composite grinding tool An ultrasonic vibration composite grinding tool is disclosed wherein a plurality of small-sized grinding wheels are arranged for carrying out grinding of a ground material while applying vibration to the ground material, to thereby ensure stable operation... | 11/16/1999 |
| 5967880 | Method and apparatus for ultrasonically texturing ABS of magnetic head of hard disk drive A method and apparatus for texturing the air bearing surface (ABS) of a magnetic head of a hard disk drive includes juxtaposing the ABS with an ultrasonically-driven sonitrode having a diamond die end. An alumina slurry is disposed between the sonitrode a... | 10/19/1999 |
| 5934976 | Method for grinding a taper surface and grinding apparatus using the same A lower side of a rotatable grindstone spindle is connected directly to a PZT (Piezoelectric element). By changing electric drive supplied to the PZT, reciprocating movement can be applied to the grindstone through the grindstone spindle in addition to ro... | 08/10/1999 |
| 5904615 | Pad conditioner for chemical mechanical polishing apparatus A pad conditioner for a chemical mechanical polishing (CMP) apparatus which is adapted to remove a glazing phenomenon occurring on a polishing pad when wafers are machined using the CMP apparatus. The pad conditioner includes a swing arm pivotally mounted... | 05/18/1999 |
| 5863883 | Slurry cleaning process A method of cleaning a solid surface which is particularly effective for a surface having a complicated structure including slots and holes comprises immersing the solid surface in a cleaning slurry comprising a cleaning liquid and abrasive particles whic... | 01/26/1999 |
