Nicholas J Demarco

US Patent:

20160109473, Apr 21, 2016

Filed:

Oct 16, 2015

Appl. No.:

14/885992

Inventors:

- Morrisville NC, US
Nicholas DeMarco - Raleigh NC, US

Assignee:

PRACTICHEM LLC - Morrisville NC

International Classification:

G01N 35/00
G05B 15/02

Abstract:

Web-based interactive process facilities and systems management apparatus and methods are described, which have general applicability to industrial facilities and equipment utilized to carry out unit or sequential operations in the specific processing application. The apparatus and methods of the present disclosure have particular applicability to the management and operation of commercial high pressure liquid chromatography installations, and enable a substantial simplification of chromatography instruments to be employed in networked arrangements.

US Patent:

20160077067, Mar 17, 2016

Filed:

Nov 24, 2015

Appl. No.:

14/951412

Inventors:

- Morrisville NC, US
Nicholas DeMarco - Raleigh NC, US

Assignee:

Practichem LLC - Morrisville NC

International Classification:

G01N 30/74
H05B 33/08
G01N 30/26

Abstract:

A detector for detecting constituents of a liquid for use in liquid chromatography is disclosed. The detector includes a first optical flow cell body and a second optical flow cell body, each having a channel therethrough that allows passage of a liquid from an inlet port to an outlet port. The first and second optical flow cell bodies are arranged in series such that the liquid exiting the outlet port of the first optical flow cell body enters the inlet port of the second optical flow cell body. An insulator resides between the first optical flow cell body and the second optical flow cell body, which is adapted to electrically insulate the first optical flow cell body from the second optical flow cell body while allowing the liquid to pass from the first optical flow cell body to the second optical flow cell body. The first optical flow cell body is adapted to facilitate measurement of absorption by the liquid of a first wavelength of light, and second optical flow cell body is adapted to facilitate measurement of absorption by the liquid of a second wavelength of light. The first and second optical flow cell bodies are further adapted to perform as electrodes for measuring the conductivity of the liquid.

US Patent:

20150260693, Sep 17, 2015

Filed:

Mar 14, 2014

Appl. No.:

14/120425

Inventors:

Nicholas DeMarco - Morrisville NC, US

International Classification:

G01N 30/26
G01N 30/64
H05B 33/08
G01N 30/74

Abstract:

A detector for detecting constituents of a liquid for use in liquid chromatography is disclosed. The detector includes a first optical flow cell body and a second optical flow cell body, each having a channel therethrough that allows passage of a liquid from an inlet port to an outlet port. The first and second optical flow cell bodies are arranged in series such that the liquid exiting the outlet port of the first optical flow cell body enters the inlet port of the second optical flow cell body. An insulator resides between the first optical flow cell body and the second optical flow cell body, which is adapted to electrically insulate the first optical flow cell body from the second optical flow cell body while allowing the liquid to pass from the first optical flow cell body to the second optical flow cell body. The first optical flow cell body is adapted to facilitate measurement of absorption by the liquid of a first wavelength of light, and second optical flow cell body is adapted to facilitate measurement of absorption by the liquid of a second wavelength of light. The first and second optical flow cell bodies are further adapted to perform as electrodes for measuring the conductivity of the liquid.