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Patent Searching and Data


Matches 351 - 400 out of 2,914

Document Document Title
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...  
WO2002022250A3
The present invention relates to microfluidics and in particular to a fluidic microreactor and constituent parts of such a microreactor. The production in a number of microreactors and the sampling of a number of fluids, that is, reactor...  
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...  
WO2002073184A3
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...  
WO2002090782A8
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...  
WO2002053921A3
A device (2) for moving a fluid in a fluidic system. The device may include one or more controllably openable closed chambers (10). The pressure within the closed chamber(s) (10) is lower than ambient pressure outside the fluidics system...  
WO/2002/097865A2
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...  
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...  
WO2002033268A3
An improved microvalve device (300) is configured to provide a more robust and durable operation to withstand the demands of various operating environments. The microvalve may comprise a valve seat (302) and a diaphragm (304), with the d...  
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/2002/081934A2
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...  
WO2002050456A3
A vortex valve (1) that comprises a valve body (11); an inlet chamber (20); a fluid distribution chamber (31); a vortex chamber (2); two tangential ducts (3, 4) through which two opposing flows are injected from the fluid distribution ch...  
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/2002/068849A1
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 ...  
WO2002034195B1
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/2002/065005A1
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/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...  
WO2002007884A3
The movement and mixing of microdroplets through microchannels is described employing microscale devices, comprising microdroplet transport channels, reaction regions, electrophoresis modules, and radiation detectors. Microdroplets are m...  
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...  
WO/2002/060582A2
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.  
WO2002022492A3
A MEMS valve device driven by electrostatic forces is provided. The MEMS valve device includes a substrate having an aperture formed therein, a substrate electrode, a moveable membrane that overlies the aperture and has an electrode elem...  
WO2002022267A3
A microfluidic device having a coating on a surface which surface properties can be altered by applying an external stimulus. Such a surface change may be used to guide or direct fluid on these surfaces, thus controlling flow in the micr...  
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...  
WO/2002/053921A2
A device (2) for moving a fluid in a fluidic system. The device may include one or more controllably openable closed chambers (10). The pressure within the closed chamber(s) (10) is lower than ambient pressure outside the fluidics system...  
WO/2002/053290A2
The present invention relates to microfluidic systems, including valves (12) and pumps for microfluidic systems. The valves of the invention include check valves (30) such as diaphragm valves and flap valves. Other valves of the inventio...  
WO2001078893A9
The invention provides microfluidic devices with embedded fluidic impedances. Such impedancesdo not allow fluid to pass at a low differential pressure, but allow fluid to flow at a higher differential pressure. Impedances are formed by t...  
WO2001071226A3
A microvalve device for controlling fluid flow in a fluid circuit (10). The microvalve device comprises a body (12) having a cavity formed therein. The body further has first (20) and second (22) pilot ports placed in fluid communication...  
WO/2002/050456A2
A vortex valve that comprises a valve body; an inlet chamber; a fluid distribution chamber; a vortex chamber; two tangential ducts through which two opposing flows are injected from the fluid distribution chamber into the vortex chamber;...  
WO2001089696A3
A device for generating a stable concentration gradient in a microfluidic channel. A solution of a given concentration of a soluble compound and a diluting solution are co-delivered into a microfluidic channel. By varying the flow rates ...  
WO2001090614A3
A passive valve for use within microfluidic structures. Surface tension forces developed within microscale channels are used to control flow within the channels. Flow can be halted within a channel until fluid force reaches a predetermin...  
WO/2002/043615A2
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 alon...  
WO/2002/044566A1
The invention concerns a valve (2), traversed by at least a channel (3), for directing at least a fluid (F3) driven by transfer means inside a device (1), said device (1) comprising at least a surface (4), optionally planar, the valve (2...  
WO/2002/044823A1
A method of easily controlling the flow of fluid in a micro system without using a complicated valve structure, comprising the steps of adding the substance transformed from sol to gel by stimulation to the fluid flowing through the micr...  
WO2001089682A3
A device and method of addressing a microfluidic cartridge to interface with external fluid supplies and external activation of internal control devices. The fluid interface couples the microfluidics of the cartridge to the macrofluidics...  

Matches 351 - 400 out of 2,914