Famous Patents
3M employee and church chorister Art Fry needed something to temporarily mark pages in his hymnal. He was in luck because his colleague, Spencer Silver, accidentally developed a glue that was too weak for other purposes. After initially discouraging consumer response, Post-it Notes became a hit in 1979.
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| Number | Title | Issue Date |
| 7077731 | Chemical mechanical planarization (CMP) system and method for preparing a wafer in a cleaning module A method for preparing a wafer in a cleaning module is described. In this method, slurry is dispensed onto a surface of a wafer. Next, a chemical mechanical planarization (CMP) operation is conducted in the cleaning module by contacting a surface of a brush with the... | 07/18/2006 |
| 7008298 | Machine for machining long workpieces provided with cutting teeth, particularly for grinding endless saw blades In a machine (10) for machining long workpieces (32) provided with cutting teeth (60), particularly for grinding endless saw blades, having a machine base (40) and a machining device (12) which has a rotatably drivable tool (16 | 03/07/2006 |
| 6884154 | Method for apparatus for polishing outer peripheral chamfered part of wafer In a process for polishing the chamfered peripheral part of a wafer using a polishing cloth while supplying a polishing slurry in order to improve productivity of the process by reducing a polishing time, at least two steps of polishing processes are performed in se... | 04/26/2005 |
| 6811465 | Workpiece grinding method which achieves a constant stock removal rate In a method of grinding a component such as a cam, a reduction in the finish grinding time is achieved by rotating the component through only a single revolution during a final grinding step and controlling the depth of cut and the component speed of rotation during... | 11/02/2004 |
| 6341999 | Glass substrate chamfering method and apparatus A method for glass substrate chamfering using a metal-bonded outer-surface grindstone 12 for simultaneously processing the end surface and the oblique surfaces of the outer periphery of a doughnut-like glass substrate 1 with a circular hole 1a at the cent... | 01/29/2002 |
| 6336847 | Method and apparatus for honing a chip saw A chip saw in which chips are brazed onto the peripheral edge thereof is clamped, and is rotated while bringing a rotational brush into contact with a honing-subjected portion of the peripheral edge. A liquid, which has dustproof oil and abrasive powder, ... | 01/08/2002 |
| 6261160 | Method and apparatus for specular-polishing of work edges A polishing apparatus comprises a rotating table intermittently rotating through 120°0 increments; three polishing drums and three work-holding means 12 provided on the rotating table; a handling means for unloading a processed work from the work-holding... | 07/17/2001 |
| 6227952 | Apparatus for creating a concave surface from a spectacle blank A method for creation of a surface from a rough blank for spectacles is which is suitable for both brittle-hard materials and for plastics uses makes use of a disk-shaped, rotation-symmetrical tool of relatively large diameter, by means of which the mater... | 05/08/2001 |
| 6220927 | Lens grinding apparatus An eyeglass lens grinding apparatus is used for processing an eyeglass lens based on processing data obtained from target lens configuration data indicative of an eyeglass frame shape. In the eyeglass lens grinding apparatus, a lens is rotated while being... | 04/24/2001 |
| 6106373 | Multi-task grinding wheel machine This application relates to a grinding machine which is capable of performing two controlled grinding operations simultaneously on a rotating workpiece.... | 08/22/2000 |
| 5716256 | Lens grinding apparatus for grinding an eyeglass lens from a plurality of directions A subject lens is held by two chuck shafts, which are rotated synchronously by pulse motors during a grinding operation. A group of grinding wheels are mounted on each of rotary shafts of right and left lens grinding parts. The rotary shafts are disposed ... | 02/10/1998 |
| 5658189 | Grinding apparatus for wafer edge A slide table is slidably supported on the slide stage which is moved by a guide screw. The slide table is connected with the slide stage by means of pressurization means. A rotatable wafer table is provided on the slide table. A grinding wheel for chamfe... | 08/19/1997 |
| 5609512 | Method and apparatus for off-line honing of slicer blades An apparatus and method for honing, sharpening or grinding a curved peripheral cutting surface of a slicer blade are provided. Included is the use of one of a set of interchangeable cams that generally follows the curved shape of the blade cutting surface... | 03/11/1997 |
| 5607348 | Disc brake grinding apparatus and method An apparatus for grinding a disc brake disc having opposite surfaces, the apparatus comprising: a free-standing support; a pair of rotors, at least one of which is a grinding rotor, the rotors attached to the support to extend in spaced relation at opposi... | 03/04/1997 |
| 5392567 | Method of removing an exposed cord on a power transmission belt, an apparatus for carrying out the method, and a power transmission belt made by practicing the method A method of removing a portion of a cord that is exposed on the side surface of a power transmission belt. The method consists of the steps of providing an endless power transmission belt having inside and outside surfaces, laterally oppositely facing sid... | 02/28/1995 |
| 5179806 | Method and apparatus for buffing a tire sidewall An apparatus is provided for removing material from the sidewall of a tire. The apparatus may be used for removing the thin layer of black rubber that normally covers the white letters or white stripe of the sidewall of a newly cured tire, and for buffing... | 01/19/1993 |
| 5097630 | Specular machining apparatus for peripheral edge portion of wafer A specular machining apparatus for giving a specular machining or mirror-like surface to a peripheral edge portion, in particular a chamfered portion, of typically a semiconductor wafer such as a silicon wafer. This mirror-like surface is provided to smoo... | 03/24/1992 |
| 4934104 | Cone tail chuck apparatus, and a method for using the same apparatus A cone tail chuck apparatus for chucking a conical body comprising: a plurality of abrasive stones arranged in a circle; a first drive device for causing the abrasive stones to spin; a second drive device for causing the abrasive stones to move centripeta... | 06/19/1990 |
| 4494338 | Lens-shaped article or the like and a method and apparatus for the manufacture of same A lens-shaped article or the like which has a support frame formed as a unitary structure with the outer periphery of the lens-shaped body, and a method and apparatus for the manufacture of such a lens-shaped article or the like. The manufacturing method ... | 01/22/1985 |
| 4468890 | Apparatus for the manufacture of lens-like articles and the like An apparatus for the manufacture of lens-like articles and the like, in which two work holders are provided in a manner to be movable along a common center axis and rotatable thereabout and machining means is provided for surfacing a work or work-piece he... | 09/04/1984 |
| 4426811 | Method of and apparatus for grinding the edges of glass sheets A method of grinding glass sheets whose edges are polygons that are not symmetrical about a point is carried out in an apparatus having a supply station for supporting a stack of such sheets with all of the sheets in the stack in vertical registration, a ... | 01/24/1984 |
| 4262452 | Disc brake grinding apparatus and method Rotors are located to engage opposite sides of a brake disc. One or both rotors is a grinding rotor and rotation of same accomplishes rapid finish treating of the disc. The rotors and a drive plus an actuator are supported by a hand held frame. An actuato... | 04/21/1981 |
| 4211040 | Process for machining silicon rods and tubes by abrasion The invention provides a process and an apparatus for machining silicon r and tubes by abrasion. The risk of fracture of such workpieces during grinding is prevented in this method and apparatus by the workpiece being held vertically in a cylindrical gri... | 07/08/1980 |
| 3935676 | Tire tread grinding In apparatus for grinding arc portions of parts of the width of a tire tread, apparatus for controlling tilt of the grinding wheels relative to the tire rotation plane makes use of three paddles having arc contours for lengthened contact with the circumfe... | 02/03/1976 |
