Carl W Sims

US Patent:

8430949, Apr 30, 2013

Filed:

Mar 25, 2011

Appl. No.:

13/072422

Inventors:

Yuri Gerner - Mendota Heights MN, US
Quan Liu - Shoreview MN, US
Carl W. Sims - Saint Paul MN, US

Assignee:

IDEX Health & Science LLC - Roseville MN

International Classification:

B01D 53/22
B01D 19/00
B01D 61/36

US Classification:

96 6, 96 4, 96 8, 96 10, 96193, 95 46, 210640

Abstract:

A liquid degassing apparatus is arranged to limit pervaporation through a membrane by establishing a pervaporation control space at a permeate side of the membrane. The pervaporation control space is defined in a vacuum chamber between the membrane and a shield member. The shield member may be substantially gas and liquid impermeable to maintain an environment in contact with the permeate side of the membrane that is relatively rich in solvent vapor concentration, thereby limiting further liquid pervaporation across the membrane.

US Patent:

8440003, May 14, 2013

Filed:

Jun 29, 2011

Appl. No.:

13/172133

Inventors:

Yuri Gerner - Mendota Heights MN, US
Quan Liu - Shoreview MN, US
Carl W. Sims - Saint Paul MN, US

Assignee:

IDEX Health & Science, LLC - Rohnert Park CA

International Classification:

B01D 53/22
B01D 19/00
B01D 61/36

US Classification:

96 6, 96 4, 96 7, 96 10, 96193, 96421, 95 19, 95 46, 210640, 417 442, 138 40

Abstract:

A liquid degassing apparatus is arranged to limit pervaporation through a membrane by attenuating pressure oscillations developed by a vacuum pump. The attenuation is obtained through a combination of one or more flow restrictors and added volume chambers fluidly interposed between the degassing chamber and the vacuum pump. The pressure oscillation attenuation may further inhibit cross-contamination of pervaporated solvents among a plurality of distinct degassing chambers.

US Patent:

20120240666, Sep 27, 2012

Filed:

Mar 16, 2012

Appl. No.:

13/422168

Inventors:

Carl Sims - Saint Paul MN, US

International Classification:

G01N 30/02

US Classification:

73 6156

Abstract:

A multi-dimensional liquid analysis system includes a flow splitter for separating mobile phase outflow from a first dimension liquid analysis system into first and second liquid split outlet flows. Volumetric flow rate control of the split outlet flows is provided by a flow control pump which withdraws one of the split outlet flows from the flow splitter at a controlled withdrawal flow rate to define the other split outlet flow rate as the difference between the outflow rate from the first dimension system and the withdrawal flow rate. In this manner, accurate and consistent flow division can be accomplished, which is particularly useful for multi-dimensional liquid analysis.

US Patent:

20160114264, Apr 28, 2016

Filed:

Oct 28, 2015

Appl. No.:

14/925692

Inventors:

- Rohnert Park CA, US
Yuri Gerner - Mendota Heights MN, US
Carl Sims - Santa Rosa CA, US

International Classification:

B01D 19/00

Abstract:

An elongated fluid degassing apparatus may be employed as a fluid transfer line for fluidly connecting components in a liquid system, while at the same time degassing, or preventing re-gassing of, the fluid. The fluid transfer line degassing apparatus forms a shell and tube degassing arrangement, wherein shell-side fluid flow is facilitated by one or more spacer elements that centrally position a semi-permeable separation membrane in the shell chamber. The degasser may include one or more tubular separation membranes that provide a gas-permeable, liquid-impermeable contact surface to effect the gas-liquid separation of the process fluid.