Patent application number | Description | Published |
20100044368 | Method and Apparatus for Continuous Flow Microwave-Assisted Chemistry Techniques - The invention is a method and associated instrument for microwave assisted chemistry. The invention includes the steps of directing a continuous flow of fluid through a microwave cavity while applying microwave radiation to the cavity and to the continuous flow of materials therein, monitoring the pressure of the fluid in the cavity; and cooling the fluid in the cavity when the pressure exceeds a predetermined setpoint pressure. | 02-25-2010 |
20110293491 | Controlled Pressure Release Vessel for Microwave Assisted Chemistry - A controlled release and self-resealing pressure-maintaining lid for reaction vessels in microwave assisted chemistry is disclosed. The lid includes a rigid perimeter, a rigid center load-bearing portion, and a flexible portion connecting the rigid perimeter to the center load-bearing portion so that the center portion can move when said flexing portion flexes. The lid can be used in conjunction with a vessel assembly. The vessel assembly can include a microwave-transparent, heat expandable reaction vessel having at least two cylindrical portions axially adjacent one another with one of the portions having a diameter larger than the diameter of the other portion, a transition portion between the two cylindrical portions, a vessel mouth in the larger-diameter portion, and a cylindrical retaining sleeve around the vessel. | 12-01-2011 |
20110300036 | Controlled Pressure Release Vessel for Microwave Assisted Chemistry - A controlled release and self-resealing vessel assembly for high pressure, microwave assisted chemistry is disclosed. The vessel assembly includes a cylindrical reaction vessel formed of a material that is substantially transparent to microwave radiation. The vessel has angular walls, one closed end for retaining reactants in the lower portions of the vessel, and one open end that defines a mouth for the vessel. The mouth of the cylinder vessel has a lip that is beveled inwardly from the open end. A microwave-transparent solid floating plug closes the mouth of the reaction vessel; with the plug have a frustum portion for engaging the beveled lip when the plug is placed in the mouth of the vessel. A lid exerts a defined axial force against the plug for sealing the plug in the open end of the cylinder with the frustum engaging the lip. | 12-08-2011 |
20130302220 | CONTROLLED PRESSURE RELEASE VESSEL FOR MICROWAVE ASSISTED CHEMISTRY - A controlled release and self-resealing vessel assembly for high pressure microwave assisted chemistry is disclosed. The vessel assembly includes a microwave-transparent, heat expandable reaction vessel having at least two cylindrical portions axially adjacent one another, with one of the portions having a diameter larger than the diameter of the other portion. A transition portion is between the two cylindrical portions, the vessel mouth is in the larger-diameter portion, and a cylindrical retaining sleeve surrounds the vessel. | 11-14-2013 |