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| Number | Title | Issue Date |
| 7147543 | Carrier assemblies, planarizing apparatuses including carrier assemblies, and methods for planarizing micro-device workpieces Carrier assemblies, planarizing machines with carrier assemblies, and methods for mechanical and/or chemical-mechanical planarization of micro-device workpieces are disclosed herein. In one embodiment, the carrier assembly includes a head having a chamber, a magneti... | 12/12/2006 |
| 6958001 | Carrier assemblies, planarizing apparatuses including carrier assemblies, and methods for planarizing micro-device workpieces Carrier assemblies, planarizing machines with carrier assemblies, and methods for mechanical and/or chemical-mechanical planarization of micro-device workpieces are disclosed herein. In one embodiment, the carrier assembly includes a head having a chamber, a magneti... | 10/25/2005 |
| 6679760 | Lapping method of magnetic head slider and lapping method of bar A lapping method of a magnetic head slider provided with an element-forming surface, an ABS and an MR element formed on the element-forming surface, including a step of setting the magnetic head slider to be lapped on a lapping means, and a step of lappin... | 01/20/2004 |
| 6264536 | Reducing polish platen corrosion during integrated circuit fabrication A technique for reducing corrosion over a steel platen used during semiconductor wafer polishing. An anodic metal plate is attached to the steel platen to cathodically protect the surface of the steel platen via an electrochemical process. This cathodic p... | 07/24/2001 |
| 6217423 | Apparatus and method for mirror surface grinding of magnetic disc substrate A metal bond grinding wheel 12 having a horizontal working surface 12a, a holding and rotating means 14 for a workpiece having a horizontal supporting surface 14a opposite to said working surface 12a, a voltage applying means 16 having the metal bond grin... | 04/17/2001 |
| 5800255 | Lap adapter A unitary lap blank has a front polishing portion and a rear disk portion contoured for coupling the disk to a chuck of the lathe and also to a chuck of the polishing machine. Preferably, the disk has a circular channel in its face opposed to its base and... | 09/01/1998 |
| 5476606 | Compositions and methods for polishing Improved compositions for polishing silicon, silica or silicon-containing articles is provided which consists of an aqueous medium, abrasive particles and an anion which controls the rate of removal of silica. The anion is derived from a class of compound... | 12/19/1995 |
| 5456736 | Lap and lapping liquor This invention provides a lap capable of reducing the pole recession produced between the substrate and the magnetic film when the air-bearing surface of a thin-film magnetic head is lapped, a lapping liquor used for such lapping, and a thin-film magnetic... | 10/10/1995 |
| 5209023 | Thermoplastic polymer optical lap and method of making same An optical polishing lap is molded of a thermoplastic polymer containing a particulate-mineral-reinforced polyamide resin in a one-piece construction. The lap has a base portion which construction allows the lap to be mounted to any one of a lap cutter, a... | 05/11/1993 |
| 5022191 | Polishing plate A polishing plate wherein the arcs cut in the soft parts by a circle whose radius is equal to approximately half that of the disk and whose center is at a distance from that of the disk equal to half the radius of the disk have a length between 0.5 and 5 ... | 06/11/1991 |
| 4928434 | Lapping internal surfaces In improved equipment for lapping internal surfaces, use is made of a composite lap, the rod of which is held by the tool spindle and inserted with a marginal degree of clearance into a cone that carries the abrasive shell, and a chucking mechanism locate... | 05/29/1990 |
| 4821461 | Textured lapping plate and process for its manufacture A lapping plate is selectively textured for improved useful life and greater abrading consistency. Glass beads are serially propelled onto a lapping surface of the lapping plate in order to form spherical cavities of generally uniform size and distributio... | 04/18/1989 |
| 4720942 | Apparatus for abrading contact lens edges An apparatus that abrades the edges of contact lenses. The device has a cone-shaped body portion which has an axis of rotation that coincides with the axis of symmetry of a cone. The body portion is fixedly secured to a spindle member that is engaged by a... | 01/26/1988 |
| 4532737 | Method for lapping diamond An improved method for lapping the facets on a hard material such as a diamond provides faster machining and reduced crystallographic sensitivity. The improved method uses a lapping disc coated with an abrasive slurry, which lapping disc comprises a terna... | 08/06/1985 |
| 4275530 | Grinding heads for grinding machines A grinding head has at least one expandable grinding tube mounted on an expansion cone. The expansion cone is carried by, and is rotatable with, an expansion rod which is coupled for rotation with a driven part of the head. The expansion rod and cone are ... | 06/30/1981 |
| 4254591 | Internal lapping tool An internal lapping tool comprises a steel mandrel having a cast iron generally cylindrical head welded on the front and thereof. The head is formed with two spaced arcuate lapping faces opposite a longitudinal slot which carries a cast iron insert provid... | 03/10/1981 |
| 4253279 | Precision honing device A precision honing device including a substantially tubular honing member having an outer work engaging surface, an axially tapered inner surface, a full length slit through the device along one side thereof, and a layer of a relatively hard wear resistan... | 03/03/1981 |
| 4223485 | Lapping tools A tool for lapping internal surfaces of holes. Lapping tools conventionally have an expandable working portion for variable diameter operation. Known tools tend to expand in a barrel shape leading to inaccurate lapping. The invention seeks to avoid this b... | 09/23/1980 |
| 4188755 | Expandable abrading tool and abrasive insert and washers thereof An expandable abrading tool (20, 20a, 20b) disclosed includes a rotatable arbor (22) and an abrasive insert (24, 24a, 24b) having stacked washers (26) which receive the arbor and are mounted thereon in a clamped relationship. Each washer has a round outer... | 02/19/1980 |
