| Patent application number | Description | Published |
|---|
| 20090165326 | APPARATUS AND METHOD FOR DRYING A SOLID OR LIQUID SAMPLE - This disclosure describes a sample drying system and method that provides a high rates of evaporation and sublimation that is commonly employed in compound processing procedures. The drying increases the sample-solute concentration and removes the solvent completely to produce the dried sample as a non-volatile solute precipitate. Re-circulating of drying gas is disclosed along with a solvent cold trap. | 07-02-2009 |
| 20090249801 | COLD TRAP TO INCREASE GAS RESIDENCE TIME TO INCREASE CONDENSATION OF VAPOR MOLECULES - A cold trap is disclosed with a chamber having partitions or surfaces that direct the incoming wet vapor to substantially all of the cold inner surfaces of the cold trap. Typically, the cold inner surfaces are the inner walls of the chamber. The interaction of the wet vapor and the cold surfaces condense the molecules. The wet vapor minus the condensed molecules may be heated and returned to the source of the wet vapor for reuse. One example of the partitions or surfaces is a spiral inclined plane where the wet vapor flows along the spiral plane that acts to drive the wet vapor toward the cold inner walls of the chamber. | 10-08-2009 |
| 20100032021 | FRACTION COLLECTOR DIVERTER VALVE - A diverter valve assembly includes a standard three-way valve and an upstream two-way valve and a further upstream eluant accumulator. When a new container is required for collection, the two-way valve stops the flow from the source. Since the source flow is continuous, the flow is directed into the accumulator pushing a spring loaded piston. When the new container is in position, the two-way valve opens and eluant flow from the source and the accumulator are directed to the new container. There is no flow to waste during the stoppage of flow. | 02-11-2010 |
| 20100101109 | DEVICE AND METHOD FOR INCREASING EVAPORATION RATES OF BLOW-DOWN APPARATUS - This disclosure reveals a combination of embodiments that increase the evaporation rate of liquid solutions when subjected to blow-down gas flows. Certain gas flow separator baffles or framed inserts with vanes may be especially effective to enhance evaporation when combined with aggressive blow-down flow rates and centrifugal force. The centrifugal force applied to the evaporating liquid protects sample integrity by preventing the solution(s) from splashing out of the drying container. Such splashing, when high blow-down gas flow rates are directed into the sample containers, affects yield and purity. | 04-29-2010 |
| 20100102008 | BACKPRESSURE REGULATOR FOR SUPERCRITICAL FLUID CHROMATOGRAPHY - This disclosure describes an implementation of a backpressure regulator (BPR) device which is a generally required system component to accomplish supercritical fluid chromatography (SFC). This particular BPR embodiment utilizes a magnetostrictive or piezo-stack displacement transducer to modulate a variable restriction orifice to maintain constant upstream pressure. Also, an example is provided of a repurposed commercially available common rail fuel injector from the automotive industry to serve as the variable restriction element of the BPR. | 04-29-2010 |
| 20100326604 | ACCELERATED EVAPORATION PROCESS AND APPARATUS UTILIZING RE-CIRCULATING LOOPS - A covered sample plate with wells holding samples to be dried. The cover has through holes that communicate with only a portion of each well. The covered plate is inserted into a cradle of an assembly of cradles that is rotated. The cradle assembly fits into a tub and when rotated the cradles present a solid wall that functions as a centrifugal fan that drives air out through an opening in the tub. The air is dried of solvent and re-circulated back through the through holes in the cover to the sample wells. | 12-30-2010 |
| 20100331162 | PROCESS AND APPARATUS TO AUTOMATICALLY REFILL EVAPORATION APPARATUS - A fraction collector, sample drier that automatically re-fills sample contains is described. Profiles of RPM and/or back EMF decays as a rotating but unpowered rotor comes to a stop are generated. The profiles may be generated for rotors with full, partially filled and empty sample containers. During a drying operation as the non-volatile samples are collected by evaporating the liquids more sample may be loaded while the rotor is spinning. The operation is to unpower the mechanism and measure the decay profile of PPM and/or EMF over time. A threshold may be set so that the lighter rotor will stop more quickly, and if the threshold is crossed the mechanism will load more sample into the containers. | 12-30-2010 |
