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Matches 251 - 300 out of 2,913

Document Document Title
WO/2004/106792A1
A fluid flow control valve, especially for severe service, e.g. gas and oil power application, comprises a plurality of vortex chambers (9) through each of which fluid flows in substantially vortex fashion between an inlet channel (8) an...  
WO/2004/104228A1
The use of microfluidic structures enables high throughput screening of protein crystallization. In one embodiment, an integrated combinatoric mixing chip allows for precise metering of reagents to rapidly create a large number of potent...  
WO/2004/104555A2
Novel fluid logic devices are disclosed. Certain examples of the fluid logic devices include two or more fluid logic gates that are each operative to select and/or directy analytes in a sample into one or more fluid flow channels in comm...  
WO2004059474A3
The disclosure pertains to a space-conserving integrated fluid delivery system which is particularly useful for gas distribution in semiconductor processing equipment. The present invention also pertains to an integrated fluid flow netwo...  
WO2004085852A3
The invention relates to a control valve (12) comprising a valve housing (13) provided with two inflow openings (6, 7), one outflow opening (8), and an inner chamber (14) that can be filled with a pressurised medium and contains a switch...  
WO/2004/094994A2
Microfluidic devices provide substances to a mass spectrometer. The microfluidic devices include first and second surfaces, at least one microchannel formed by the surfaces, and an outlet at an edge of the surfaces. Some embodiments also...  
WO2002081935A8
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/2004/088148A1
A fluidic device comprising a housing having an inlet (10) and an outlet (12) defining a fluid flow path (14) therebetween. A channel (16) is provided within the housing, which channel (16) is filled with a material (18), such as wax, wh...  
WO/2004/085852A2
The invention relates to a control valve (12) comprising a valve housing (13) provided with two inflow openings (6, 7), one outflow opening (8), and an inner chamber (14) that can be filled with a pressurised medium and contains a switch...  
WO/2004/081390A1
A normally closed microvalve comprises a fluid inlet, a fluid outlet (332), a displaceable closure element (368, 370), which rests against a sealing lip when the microvalve is closed so that the fluid inlet is fluidically separated from ...  
WO/2004/079241A1
A fluid delivery device is provided which comprises a microchannel device for cutting out a certain amount of a sample from a micorochannel by controlling a valve opening. The fluid delivery device has a valve (301) for controlling a flo...  
WO2004011143A3
A microfluidic device that includes a micro ball valve is provided. The microball valve is capable of preventing or interrupting fluid flow through the microfluidic device. The microfluidic device can include a substrate layer, and a mic...  
WO/2004/074829A1
A microfluidics system comprising:a channel having an inlet (32) and an outlet (38); a first membrane (31) positioned between the inlet (32) and outlet (38) and comprising an aperture having a radius within the range 0.1 to 50 ┬Ám, the i...  
WO/2004/074694A1
The invention relates to a flow circuit comprising at least one flow channel in which is located a flow control means, wherein the physical state of the flow control means is alterable by application of an external stimulus, such that in...  
WO2004042357A3
The movement and mixing of microdroplets through microchannels (B) is described employing silicon-based microscale devices, comprising microdroplet transport channels reaction regions, electrophoresis modules (D), and radiation detectors...  
WO2004047997A3
A fountain (50) comprises a supply of water under pressure, a primary fluidic diverter (10) having an input (12) for said supply, and first and second outputs (16a, b) diverging from said input. Two control ports (20a, b) are provided wi...  
WO2003076331A3
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...  
WO/2004/061308A1
An exemplary device for microfluidic transport includes a valve membrane sheet (400), an inlet channel (140) and an outlet channel (150). The valve membrane sheet confines transport of fluid from the inlet channel to the outlet channel w...  
WO/2004/059177A1
The present invention describes a method for fabricating micro-devices comprising aluminumoxide structures without the need for an extra lithographical processing step. So, no extra mask is needed. It appears that under certain circumsta...  
WO/2004/059474A2
The disclosure pertains to a space-conserving integrated fluid delivery system which is particularly useful for gas distribution in semiconductor processing equipment. The present invention also pertains to an integrated fluid flow netwo...  
WO2002097865A9
A valve (10(1) or 10(2)) which has a structure with at least one opening (14(1) or 14(2)) and a member (16) which has a fixed static charge and also has a first position exposing the opening (14(1) or 14(2)) and a second position sealing...  
WO2004034028A3
A microfluidic system includes one or more functional units (30, 32, 34, 36, 300, 302, 304, 306, 400) or microfluidic chips, configured to perform constituent steps in a process and interconnected to form the system. A multi-layer microf...  
WO/2004/057198A1
A vortex valve assembly in which pressure within the vortex chamber is used to provide a switching function for automated opening of a gate (14) to increase the size of the outlet (6). The pressure in the volute is used to provide a mech...  
WO2003068670A3
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/2004/053370A1
A freeze-thaw valve is provided using a Peltier heat pump where the thermal short circuit path between a cooled thermal mass (106) is reduced or absent and the valve transition time is minimized. The freeze-thaw valve comprises a Peltier...  
WO/2004/047997A2
A fountain (50) comprises a supply of water under pressure, a primary fluidic diverter (10) having an input (12) for said supply, and first and second outputs (16a, b) diverging from said input. Two control ports (20a, b) are provided wi...  
WO/2004/048787A1
The invention concerns the technical field of micro-actuators used for mechanical, chemical, electrical or thermal functions in microsystems, for microelectronic applications such as chips, or biomedical functions such as microfluidics i...  
WO/2004/046563A1
The invention relates to a variable flow resistance element comprising a fluid inlet (20), a fluid outlet (22) and a closed fluid conduit (16) of a fixed length, which connects the fluid inlet (20) to the fluid outlet (22), allowing the ...  
WO2002068849A8
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/2004/042357A2
The movement and mixing of microdroplets through microchannels (B) is described employing silicon-based microscale devices, comprising microdroplet transport channels reaction regions, electrophoresis modules (D), and radiation detectors...  
WO2004007080A3
Liquid flow devices, particularly microfluidic devices, containing solid porous materials. Flow in the devices can be pressure-driven flow and/or electroosmotic flow. The porous materials are preferably pre-shaped, for example divided fr...  
WO/2004/040392A1
A microsystem capable of setting an appropriate amount of stimulus being imparted in order to control liquid flow in a channel. The microsystem comprises microheaters (5b, 5c) for imparting a stimulus to liquid flowing through liquid cha...  
WO/2004/036059A1
A valve unit and a fluid control chip include: a valve chamber (8) having an inlet and an outlet for a fluid; a valve element (3) accommodated in the valve chamber; a piezoelectric element (4) for applying vibrations to the valve chamber...  
WO/2004/034028A2
A microfluidic system includes one or more functional units (30, 32, 34, 36, 300, 302, 304, 306, 400) or microfluidic chips, configured to perform constituent steps in a process and interconnected to form the system. A multi-layer microf...  
WO2002062697A8
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/2004/028955A2
High-density microfluidic chips contain plumbing networks with thousands of micromechanical valves and hundreds of individually addressable chambers. These fluidic devices are analogous to electronic integrated circuits fabricated using ...  
WO/2004/025128A1
A liquid delivery device comprises a flow channel (10) for flowing a liquid, at least two pressure-generating means (2,3) forgenerating pressures provided in the flow channel, and a variable member (1) placed between the pressure-generat...  
WO2003055590A3
A substrate having a surface with reversibly switchable properties. The surface comprises a nanolayer of a material that switches from a first conformation stateto a second conformation state when an external stimulus is applied. When th...  
WO2003000392A3
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/2004/018908A2
A fluid valve device formed of MEMS devices includes a generally-planar semiconductor substrate (102) having one or more apertures (100/210) to provide passages for fluids, gases, or the like. Movable gate elements (104/214) alternately ...  
WO/2004/016948A1
The invention makes available methods and devices for handling liquids in micro channel systems by means of bubbles generated by a movable light beam. In particular the devices relate to pumps, valves, mixers and thermal reactors in micr...  
WO2003078874A3
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...  
WO2003088733A8
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/2004/011143A2
A microfluidic device that includes a micro ball valve is provided. The microball valve is capable of preventing or interrupting fluid flow through the microfluidic device. The microfluidic device can include a substrate layer, and a mic...  
WO/2004/007080A2
Liquid flow devices, particularly microfluidic devices, containing solid porous materials. Flow in the devices can be pressure-driven flow and/or electroosmotic flow. The porous materials are preferably pre-shaped, for example divided fr...  
WO2003055590A8
A substrate having a surface with reversibly switchable properties. The surface comprises a nanolayer of a material that switches from a first conformation stateto a second conformation state when an external stimulus is applied. When th...  
WO/2004/000616A1
A fluidic insert (18) that receives fluid under pressure from a fluid inlet tube (14) and generates a specified spatial distribution of the fluid exiting the insert includes: (1) a body member (22) having top, bottom, front and rear oute...  
WO/2004/001261A1
An electrostatically actuated valve that is relatively small, has relatively low fabrication costs, and consumes relatively low voltage and/or power. Normally closed, normally open, three (or more) way valves, and other configurations ar...  
WO/2004/000449A1
The invention relates to hydraulic device (1) produced from one or several components, for example from a support (12) comprising: an operative cavity (3), at least two ducts (41, 42), for example an inlet (41) and outlet (42) for a liqu...  
WO2003088733A3
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 (...  

Matches 251 - 300 out of 2,913