Richard C Striebich

7914612, Mar 29, 2011

May 19, 2006

11/914778

Wayne A. Rubey - Vandalia OH, US
Richard C. Striebich - Dayton OH, US
Jesse Contreras - Orem UT, US

University of Dayton - Dayton OH

B01D 53/02

96101, 73 2339, 73 2342, 95 82, 95 87

A compliant column sheath assembly for use in a gas chromatograph is provided which includes an open tubular column in the form of a helical coil having a coiled length of between about 5 and 15 cm. The sheath assembly further includes an insulating sheath which surrounds the open tubular column and a frame. When incorporated in a gas chromatograph, the compliant column sheath assembly allows samples to be analyzed in about 2 to 10 seconds.

58462937, Dec 8, 1998

May 6, 1997

8/851888

Wayne A. Rubey - Vandalia OH
Richard C. Striebich - Dayton OH

The University of Dayton - Dayton OH

B01D 1508

95 87

A method of admitting and receiving a sample into a gas chromatographic column is provided in which a step increase in pressure is performed in combination with the application of a negative axial thermal gradient to provide pre-separation of solutes in the sample within the inlet region of the column. The method includes the steps of introducing a sample into the column at a first pressure and temperature, rapidly raising the temperature to invoke a negative axial thermal gradient, and then substantially instantaneously increasing the pressure. The method causes the solutes in the sample to be partially separated into narrow zones within the inlet region, resulting in eventually achieving maximum resolution.