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Nguyen, George


Primary examiner statistics: 607 patents; average approval time: 607 days
Assistant examiner statistics: 423 patents; average approval time: 691 days

Patents as Primary Examiner

1                      
NumberTitleIssue Date
8186172Structure for sensing refrigerant flow rate in a compressor
A structure for sensing refrigerant flow rate in a compressor. The structure includes a passage forming member, a restriction hole, a differential pressure-type flow rate sensor, and a partition plate. The compressor includes a housing connected to an external refri...
05/29/2012
8187057Blast nozzle with blast media fragmenter
A media blast nozzle for cleaning a surface with compressed air and ejected particles of a sublimating blast media comprises a media size changer to change a size of the blast media particles. The media blast nozzle has an entrance and an exit and a throat therebetw...
05/29/2012
8182316Oscillatingly driven machine tool
The invention discloses an oscillatingly driven machine tool, having an oscillatory drive for driving a drive shaft about its longitudinal axis, having a flange provided on the drive shaft against which an oscillatory tool can be clamped by spring force via a counte...
05/22/2012
8177606Dust shroud for rotary tools
A dust shroud for rotary tools includes a front half and a back half which are attachable together along an axis thereof to form a dust shroud. The dust shroud is mountable to a rotary power tool after mounting a mandrel in the power tool, and includes one or more o...
05/15/2012
8177604Surface abrading method of photosensitive layer of electrophotographic photoreceptor
A surface abrading method of an electrophotographic photoreceptor is disclosed, comprising abrading the surface of a photosensitive layer with an abrading member entrained about a backup roll with feeding the abrading member and rotating the photoreceptor, while mov...
05/15/2012
8177603Polishing pad composition
Polishing pads for use in chemical mechanical planarization (CMP) or polishing elements/surfaces of such pads are made from a combination of immiscible polymers, for example polyurethane and polyolefin. The polymers are selected on the basis of interfacial interacti...
05/15/2012
8172650Automatic shift dual-action tool
Tools providing automatic, smooth shifting between random orbital and rotary motion by simply increasing or decreasing force applied are taught. Exemplar is a finishing tool switchable between grinding rotary action and random orbital sanding action without powering...
05/08/2012
8172649Floor edger and grinder device
A floor edger and grinding device 10 has a deck 20 pivotably mounted to a rear frame 18 with a handle 16. The deck has a motor 22 mounted thereon that drives two grinder discs 24 in opposite rotational directions. The deck h...
05/08/2012
8172646Magnetically actuated chuck for edge bevel removal
Provided are magnetically actuated wafer chucks that permit a wafer to be clamped or unclamped at any time during a process and at any rotational speed, as desired. Such wafer chucks may include constraining members that are movable between open and closed positions...
05/08/2012
8167272Lubricating systems, lubricant atomizing devices and methods of using the same
A portable hand-held lubricant atomizing device includes an inlet for receiving pressurized gas from a pressurized gas source. A flow control mechanism is associated with the inlet for controlling delivery of the pressurized gas. A lubricant tank includes a wire pul...
05/01/2012
8162719Method and device for processing lens
The optical surface of a lens (21) held and rotated by the rotating shaft (12) of a lathe is cut or ground into an aspherical surface from a direction perpendicular to the axis of the rotating shaft (12) and the axial direction of the rotating s...
04/24/2012
8162723Method of polishing a tungsten carbide surface
The invention is directed to a method for polishing a surface comprising tungsten carbide, comprising contacting a surface comprising tungsten carbide with an oxidizing agent, a polishing component, and a liquid carrier, and abrading at least a portion of the surfac...
04/24/2012
8162724Surface treating method and apparatus
A surface treating apparatus treats a substrate surface by rotating a cylindrical polishing member in a state where the polishing member makes contact with the substrate surface. A polishing liquid is supplied to a polishing liquid passage that is provided in a cent...
04/24/2012
8162722Grindstone contact sensing method and its device, and honing method and honing machine
A grindstone contact sensing technology capable of sensing the contact position of the honing grindstone with the inner circumference of the work at high precision. A servo motor for driving the spindle rotation, and a servo motor for driving the depth of cut are pr...
04/24/2012
8157615Device and process for applying and/or detaching a wafer to/from a carrier
The invention relates to a device for applying and/or detaching a wafer to/from a carrier with a deformable membrane which can be aligned parallel to the contact surface of the wafer, with one contact side for at least partial cont...
04/17/2012
8157614Method of making and apparatus having windowless polishing pad and protected fiber
A polishing system includes a polishing pad with an aperture that extends through all layers of the polishing pad and a light transmissive film positioned on top of a light-generating or light-guiding element of an optical monitoring system. ...
04/17/2012
8152602Grinder and core drill with dust collection
A core drill or a grinder power tool design is disclosed herein also incorporated to a dust collection apparatus. The tool has a motor portion and a shaft portion, the shaft portion being characterized by a hollow shaft together with a casing forming a conduit for t...
04/10/2012
8152151Clamping fixture including a chuck and a workpiece pallet releasably located thereon
A clamping fixture comprises a chuck (1) and a workpiece pallet (22) releasably located thereon. The chuck (1) is provided with a clamping mechanism for locating the workpiece pallet (22). The clamping mechanism comprises a plurality of c...
04/10/2012
8152595System and method for optical endpoint detection during CMP by using an across-substrate signal
In a polishing process, the characteristics of the removal process may be monitored at different lateral positions to identify the clearance of the various device regions with a high degree of reliability. Consequently, upon forming sophisticated metallization struc...
04/10/2012
8146902Hybrid composite wafer carrier for wet clean equipment
A carrier structure for supporting a substrate when being processed by passing the carrier through a meniscus formed by upper and lower proximity heads is described. The carrier includes a frame having an opening sized for receiving a substrate and a plurality of su...
04/03/2012
8147297Surface grinding machine and grinding head therefor
A surface grinding machine generally consisting of a drive means provided with an output shaft; a planetary disk mounted on the shaft; and at least two grinding head units mounted on the planetary disk, each including a housing mounted on the planetary disk, a shaft...
04/03/2012
8141859Apparatus and method for effecting pin-to-shoulder tool separation for a friction stir welding pin tool
An apparatus and method for separating a pin tool from a shoulder tool, after the pin tool and shoulder tool have become welded together during a friction stir welding operation. In one exemplary embodiment a frame is used to support the shoulder tool. A fluid press...
03/27/2012
8144309Imprint lithography
A chuck apparatus for holding a substrate is the disclosed. The chuck apparatus includes a first surface portion on which the substrate is to be held and a second surface portion adjacent to the first surface portion and extending at least partially around an edge o...
03/27/2012
8142262Sanding device with detachably mounted sanding element
The invention relates to a grinding device, comprising a mounting body which is detachably connected to a grinding element, said detachable connection being designed such that the mounting body has a first adhering arrangement and the grinding element has a second a...
03/27/2012
8141860Foldable cutting board
A versatile, foldable and disposable cutting board (1) for preparing food is made of a thin, resiliently flexible sheet of propylene, stainless steel or other cut-resistant material. The board has a triangular section (11) projecting away from the user...
03/27/2012
8142257Detecting device for abnormal workpiece rotation in non-circular workpiece grinding machine
In a non-circular workpiece grinding machine, a proximity sensor is arranged to face a non-circular portion of a workpiece for sensing a maximum diameter portion of the non-circular portion to detect that the maximum diameter portion is rotating in a detection phase...
03/27/2012
8137163Burnish head design with multiple pads on side rail
A disc burnishing head includes an array of burnishing pads and a first and second side rail projecting from a bottom surface of a slider body. The side rails each have an inside surface facing the burnishing pads and an outside surface facing outward. The outside s...
03/20/2012
8137165Dust shroud with adjustable mounting mechanism
A universal dust shroud includes mounting brackets held above the shroud body by springs. The brackets move radially and vertically relative to the body to accommodate different angle grinders, and allow vertical movement of the shroud body relative to the grinding ...
03/20/2012
8133094Dust shroud with access hatch retention mechanism
A vacuum shroud for an angle grinder includes a removable hatch for grinding in a corner and provides a storage location on the shroud for the hatch in order to encourage use of the hatch when not grinding in a corner. ...
03/13/2012
8128464Chemical mechanical polishing pad
A chemical mechanical polishing pad used for chemical mechanical polishing comprises a polishing surface, a non-polishing surface that is provided opposite to the polishing surface, a side surface that connects an outer edge of the polishing surface and an outer edg...
03/06/2012
8123593Configuring of lapping and polishing machines
A lapping or polishing machine includes a material having a first finishing surface to process a surface of a work item, a measuring tool to measure a contour of the first finishing surface, and a conditioning tool having a second finishing surface to process the fi...
02/28/2012
8118645Polishing method, polishing pad, and polishing system
A polishing method, a polishing pad, and a polishing system are described. The polishing pad with a plurality of grooves is provided. The width of each groove is W and the pitch between two adjacent grooves is P. An oscillatory movement distance of a workpiece on th...
02/21/2012
8118291Workpiece positioning device
The invention relates to a workpiece positioning device (1) comprising at least one positioning axis (35, 39) and a modular machine frame (3) on which at least one workpiece receiving element (8, 9) is arranged. At least one frame part (
02/21/2012
8118642Method and machine tool for machining an optical object
A method for machining a face (1) of an optical object (6), includes providing a machine tool which itself includes a bed (1) for locating an object to be machined. The bed (1) has a receiving surface (3) that is angularly adjustab...
02/21/2012
8113921Tool set for an eccentric grinder
The invention relates to a grinding disk for an eccentric grinding machine. In order to operate the grinding disk (22) having different disks diameters on one and the same eccentric grinding machine for achieving grinding results at optimum quality, without a...
02/14/2012
8113922Machine tool, in particular hand-held power tool
The invention relates to a machine tool, particularly a hand machine tool, which comprises a driving motor and an air guide element, which is disposed in the housing of the machine tool and conducts an air current passing over the driving motor to the outside. The a...
02/14/2012
8109494Workholding apparatus having a movable jaw member
A device for holding a workpiece, the device comprising a base, a first jaw member, a movable jaw member, and features which allow the movable jaw member to be moved in large increments relative to the first jaw member in addition to features which allow the movable...
02/07/2012
8105132Eccentric grinder
An eccentric grinder has a drive which is arranged in a housing and the drive shaft of which drives a supporting shaft of a back-up pad by way of an eccentric mounting. Also provided is a friction braking device, which comprises a friction braking element on the hou...
01/31/2012
8104753Support means
Support means are provided for supporting one or more items in use. The support means includes at least first and second members and at least one of said first and second member movable relative to the other member to allow clamping and/or unclamping on an item loca...
01/31/2012
8100742Grinding method for wafer having crystal orientation
A grinding method for a wafer having a mark indicating the crystal orientation. The grinding method includes a first grinding step for grinding the upper surface of the wafer by rotating a chuck table holding the wafer thereon, rotating a grinding ring, positioning ...
01/24/2012
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