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Patent Searching and Data


Matches 251 - 300 out of 2,247

Document Document Title
WO/2003/089157A1
A method and apparatus for sorting particles moving through a closed channel system of capillary size (Fig.1) comprises a bubble valve (25) for selectively generating a pressure pulse to separate a particle (18b) having a predetermined c...  
WO/2003/088733A2
A microfluidic system includes a bubble valve for regulating fluid flow through a microchannel (21). The bubble valve includes a fluid meniscus interfacing the microchannel (21) interior and an actuator (50) for deflecting the membrane (...  
WO/2003/089138A2
A microfluidic device which is actuated by a piezo electric actuator. A microfluidic structure which comprises sequentially (i) a substrate through which there are a plurality of conduits (ii) a first layer of elastomeric material having...  
WO/2003/081052A1
An actuator for a component such as a valve or pump comprises a chamber or capsule (30) of a flexible material, which chamber or capsule (30) is mounted on a substrate (18). Within the capsule (30) is a quantity of thermopneumatic materi...  
WO/2003/081762A1
The invention describes devices for performing thermodynamic work on a fluid, such as pumps (340), compressors and fans. The thermodynamic work may be used to provide a driving force for moving the fluid. Work performed on the fluid may ...  
WO/2003/078874A2
A microfluidic delivery system substrate (1) is coated with ultra-nanocrystalline diamond (UNCD) or with a thin ceramic film, such as alumina or zirconia, that is applied by ion-beam assisted deposition; assuring that the device is imper...  
WO2002065005A9
Valve structures (100) formed in elastomer material (108) are electrostatically actuated by applying voltage to a flexible, electrically conductive wire pattern. An actuation force generated between the patterned wire structure and an el...  
WO/2003/076331A2
The invention relates to a method for producing micro-mechanical components, containing at least one elastic spring tongue, whereby said spring tongue is produced especially by means of electrodeposition, sputtering, evaporating and/or e...  
WO2003020946A9
There is disclosed a method providing micro-scale devices, nano-scale devices, or devices having both nano-scale and micro-scale features. The method of the invention comprises fluidic assembly and various novel devices produced thereby....  
WO/2003/068670A2
A valve (105) controls fluid flow in a microfluidic system (100). The valve (105) has an input port adapted to receive fluid exerting a predetermined level of pressure on the valve (105) and an output port. The valve (105) has a variable...  
WO/2003/069167A1
The invention relates to a U-shaped pipe, more particularly to an closed circulating line for central heating and refrigeration in which fluid medium serves as 'energy' carrier, and an open-type mass circulation pipe for water or gas. Th...  
WO/2003/060331A1
Disclosed is an electrically controlled valve, particularly a pneumatic valve, configured as a flat structure and comprising a plate (P) made of several parallel layers, i.e. one electricity conducting layer (1) forming a first electrode...  
WO2002034195A9
a backload-responsive fluidic switch having high pressure recovery of more than 50% comprises a body member with a power nozzle (PN) having a width W and a centerline CL which is adapted to be coupled to a source of fluid under pressure ...  
WO/2003/052081A2
The present invention provides a proportional microvalve (10) having a first (12), second (14) and third layer (16), and having high aspect ratio geometries. The first layer defines a cavity with inlet (20) and outlet ports (22). The sec...  
WO/2003/052428A1
A three-dimensional microfluidic device (100) formed from a plurality of substantially planar layers (101, 102, 103) sealed together is disclosed.  
WO/2003/046256A1
A microfluidic system and method, suitable for 'lab−on−a−chip' applications, by which a bubble is inflated in fluid flowing through a microfluidic channel at a predetermined location along the channel and the bubble is maintained a...  
WO2002060582A9
The present invention provides microfluidic devices, systems and methods for using the same, which facilitate the introduction of fluid to and from a microfluidic channel located within the microfluidic devices.  
WO/2003/044817A1
A circuit switching switch (60) having a drive device (10), comprising ceramic pumps (18a) and (18b), wherein a conductive movable body (110) is moved in a flow passage (13a) by alternately pressurizing and depressurizing, by the pumps, ...  
WO/2003/036103A1
A connector is provided for selectively coupling one or more lines or wires (19', 19'') to a receiving and/or transporting device (27). The connector comprises at least one line or wire receiving ferrule (7) having a plurality of line an...  
WO/2003/033399A1
A drive device (10), comprising ceramic pumps (18a) and (18b), wherein working fluid (100) in a flow passage (13a) is alternately pressurized and depressurized by the ceramic pumps on the left and right sides of a movable body (110) to m...  
WO/2003/031828A1
A method for setting or actuating a micro valve for use in fluidic applications comprising the steps of cooling an array of actuating members made of SMA material, to a temperature equal or below the temperature at which a transformation...  
WO/2003/027508A1
Low power integrated pumping and valving arrays which provide a revolutionary approach for performing pumping and valving approach for performing pumping and valving operations in microfabricated fluidic systems for applications such as ...  
WO/2003/012325A1
A valve (50) includes a substrate defining an upstream channel (52) and a downstream channel (54) joined by a conduit defined by a first opposed wall (74) disposed at an angle to the central axis (60) of the upstream channel (52). At lea...  
WO/2003/012566A1
A microvalve device includes a first plate, a second plate and a third plate. The second plate is connected beetween the first plate and the third plate. The second plate contains a stationary element and a moveable plate valve slider el...  
WO/2003/011460A2
A microfluidic device (10) and method using the same is provided for self-regulating the flow of fluid therethrough. The device (10) includes a body (12) defining first and second flow channels (14, 24). The first flow channel (14) has a...  
WO2002068849A9
A microactuator device (12) includes a base (20) with at least one electrode pad (24) and a permeation membrane (18). Permeation membrane (18) is typically a water-permeable membrane that is able to deform by applying an electric charge ...  
WO/2003/001215A2
A valve block (1) for a dosing device, with an arrangement of piston pipettes (2) or other dosing means, comprises, on the one side thereof, a pattern of openings (15) which may be placed on the arrangement of piston pipettes (2) and, on...  
WO/2003/000392A2
A method and apparatus are disclosed for controlling a flow rate of a fluid sample having an unknown or variable viscosity. The fluid sample is provided as a first fluid flow to a microfluidic channel. A second fluid is provided to the c...  
WO/2002/097422A1
A micro (thin film type) valve apparatus for controlling fluid flow and its rate using a microbead and a method for controlling the apparatus are provided. The microbead is moved by the magnetic forge generated by upper and lower electro...  
WO/2002/094440A2
A microchip integrated microfabricated, microfluidic, multichannel, preferably electroosmotic pump. The pump (10) comprising a plurality of microchannels (12), which begin and end in common compartments (14, 16), complexed into an array....  
WO2002081934A9
A pneumatic valve for use in laminated plastic microfluidic structures. This zero or low dead volume valve allows flow through microfluidic channels for use in mixing, dilution, particulate suspension and other techniques necessary for f...  
WO/2002/092497A2
The invention is a method for fabricating molecular filters (20) which can separate objects approximately 1-5 nm in range, where the filtration size is controlled by using thin films of materials and technologies to form a filtration cha...  
WO/2002/091028A2
The present invention relates to the use colloidal particles to realize photonic and microfluidic devices. In particular embodiments, colloidal particles are used to realize microfluidic a two-way valve, three-way valve, check valve, thr...  
WO/2002/090782A1
The inventions relate to instrument engineering and represent a jet active oscillator and the flowmeter for measuring volume and mass flow of fluid medium based thereon according to single-stage and multistage circuits. The body (2) of t...  
WO/2002/088551A1
The technical field of the invention is that of microactuators designed for mechanical, chemical, electrical or thermal functions in microsystems, for microelectronic applications such as chips, or biomedical applications such as cards i...  
WO/2002/086333A1
The present invention relates to fluidic systems, including switches for fluidic systems. The switches of the present invention may be particulary applicable to microfluidic systems. The switches (50) of the invention may include a switc...  
WO/2002/086332A1
Microfluidic devices having porous materials that impede or restrict the passage of fluid for a given pressure are provided. Such devices may serve as valves, and multiple valves having different impedance characteristics may be construc...  
WO/2002/085522A1
A microfluidic flow control device (32) includes a moveable flap (30) capable of intermittently engaging a sealing surface(21A). One-way or check valve utility may be provided. Multiple valves may be coupled to various fluid displacement...  
WO/2002/082057A2
A microcytometer which combines lysing and cytometry into a unified system that achieves blood lysis and white blood cell count in a single device. The device focuses the white cells into a thin ribbon which is then focused into a single...  
WO/2002/081085A2
Microfluidic devices and methods for performing a microfluidic process are presented. A microfluidic device conforms with a standard well plate format. The device includes a well plate comprising a plate and an array of wells formed on o...  
WO/2002/081935A2
The present invention provides microfabricated fluidic systems and methods. Microfabricated fluidic devices of the present invention include switches (232, 233) that can be opened and closed to allow or block the flow of fluid through a ...  
WO/2002/073184A2
A novel gas injection valve for injecting discrete charges of gas into a mobile phase or carrier stream is provided. Injection valves of the invention comprise a plurality of microvalves capable of receiving gas at different pressures an...  
WO/2002/070932A2
A microvalve for regulating a flow of fluid is provided. The microvalve (201) has a first plate (205), a second plate (215), a sealing membrane (217), a spacer membrane (219), a third plate (227), an actuation membrane (229) and a piston...  
WO/2002/071000A1
A single fluidic feedback oscillator (30) incorporates two independent time event measurement sensors resulting in a highly accurate volumetric flowmeter that is independent of the properties and composition of the flowing fluid. The osc...  
WO/2002/062517A2
A machining method for an integrated piping plate 201, for example, composed of a plurality of plates joined together, and in which an instrument and a component constituting an apparatus, or the instrument, or the component are or is di...  
WO2001035484A9
Disclosed are minute electromechanical devices (10, 11, 12), as electromagnetic actuators, pressure transducers, pumps and valves, which are conveniently fabricated from ceramic tape to yield monolithic ceramic and hybrid structures.  
WO/2002/062697A1
A microelectromechanical device with integrated control of a flow of a fluid has a first sheet (1) and a second sheet (2) which are arranged on each other and interconnected. The first sheet (1) has, in its surface engaging the second sh...  
WO/2002/060754A1
Methods and systems that employ non-mechanical valve modules (100) for directing fluid movement through integrated microscale channel networks (102, 104, 108). These non-mechanical valve modules (100) apply forces that counter the drivin...  
WO2001001025A9
A method of fabricating an elastomeric structure, comprising : forming a first elastomeric layer on top of a first micromachined mold, the first micromachined mold having a first raised protrusion which forms a first recess extending alo...  
WO/2002/055198A2
Various microfluidic flow control devices are provided. In one embodiment, a regulating device includes overlapping channel segments (139,143) separated by a deformable membrane (133) in fluid communication with one another. In another e...  

Matches 251 - 300 out of 2,247