Feng M Liang

US Patent:

6990486, Jan 24, 2006

Filed:

Aug 15, 2001

Appl. No.:

09/929883

Inventors:

Sheng Ma - Briarcliff Manor NY, US
Joseph L. Hellerstein - Ossining NY, US
Feng Liang - New Haven CT, US

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

G06F 7/00

US Classification:

707 6, 707100, 7071041, 707200

Abstract:

A new form of pattern referred to as a fully dependent pattern or d-pattern is provided. The d-pattern captures dependence among a set of items based on a dependency test. An efficient algorithm is provided for discovering all d-patterns in data. Specifically, a linear algorithm is provided for testing whether a pattern is an d-pattern. Further, a pruning algorithm is provided that prunes the search space effectively. Still further, a level-wise algorithm for mining d-patterns is provided.

US Patent:

20100063280, Mar 11, 2010

Filed:

Dec 20, 2007

Appl. No.:

12/519729

Inventors:

John F. Traverse - Roselle Park NJ, US
Shen-Chun Kuo - Union NJ, US
Feng Liang - Monmouth Junction NJ, US
William W. Leong - Westfield NJ, US

International Classification:

C07D 403/14

US Classification:

544295

Abstract:

The present invention discloses a novel process to prepare 4-substituted 1-Cyclopropane-sulfonyl-Piperidinyl compounds, which are useful intermediates for the preparation of antagonists of CCR5 receptor and therefore useful for the treatment of HIV virus infected mammals. It specifically discloses a novel process to synthesize 4-[4-[(R)-[1-[cyclopropylsulfonyl)-4-piperidinyl](3-fluorophenyl)methyl]-3(S)-methyl-1-piperazinyl]-1-[(4,6-dimethyl-5-pyrimidinyl)carbonyl]-4-methylpiperidine] compounds.

US Patent:

20230125226, Apr 27, 2023

Filed:

Dec 23, 2022

Appl. No.:

18/146147

Inventors:

- Charlotte NC, US
Feng LIANG - Morris Plains NJ, US
Jianming JIN - Morris Plains NJ, US
Guoqiang NI - Morris Plains NJ, US
Qinghui MU - Morris Plains NJ, US
Sam SU - Morris Plains NJ, US

International Classification:

G01N 27/407
G01N 27/406

Abstract:

Apparatus and associated methods relate to a one-piece structure for a solid electrolyte chemical sensor (SECS) having a first surface defining a cavity designed to receive a substrate that retains a solid electrolyte, an internal water impermeable coating on at least a portion of the first surface, a second surface that is substantially coplanar with an adjacent peripheral edge of a top surface of the substrate when the substrate is received in the cavity, and a plurality of electrical contacts disposed on the second surface adapted to electrically couple with the electrodes on the substrate when the substrate is received in the cavity and electrical paths are provided between respective electrical contacts and electrodes. In an illustrative example, the internal water impermeable coating may include a metallic material, such as gold. In various embodiments, the one-piece structure may advantageously prevent water loss from both the sensor substrate and the SECS.

US Patent:

20210003542, Jan 7, 2021

Filed:

Jun 30, 2020

Appl. No.:

16/916287

Inventors:

- Morris Plains NJ, US
Tengfei ZHANG - Morris Plains NJ, US
Bing CHEN - Morris Plains NJ, US
Feng LIANG - Morris Plains NJ, US

International Classification:

G01N 33/00
G01N 27/66

Abstract:

Methods and systems for detecting and limiting the water in a photoionization detector are provided. The method may include powering off a lamp configured to ionize particles of air. The method may also include monitoring a signal from the photoionization detector. The signal may be monitored based on a current between a signal electrode and a bias electrode. In an instance the signal is above a signal threshold, the method may also include electrolyzing one or more particles of water present in the photoionization detector by closing a leakage switch in order to allow current to flow through the bias electrode and the signal electrode. In an instance the signal is below the signal threshold, the method may include powering on the lamp to begin photoionization detection. Corresponding systems are also provided.

US Patent:

20200378921, Dec 3, 2020

Filed:

May 27, 2020

Appl. No.:

16/884592

Inventors:

- Morris Plains NJ, US
Feng LIANG - Morris Plains NJ, US

International Classification:

G01N 27/416
G01N 33/00

Abstract:

Methods, apparatuses, and systems for calculating a compensated reading of a gas sensing apparatus are provided. An example method includes causing a first supply of a working voltage to a sensing circuitry of the gas sensing apparatus, determining a first output of the sensing circuitry, causing a second supply of a stimulate voltage to the sensing circuitry, determining a second output of the sensing circuitry, and calculating a compensated reading of the gas sensing apparatus based at least in part on the first output and the second output.

US Patent:

20200373147, Nov 26, 2020

Filed:

May 22, 2020

Appl. No.:

16/881712

Inventors:

- Morris Plains NJ, US
Tengfei ZHANG - Morris Plains NJ, US
Bing CHEN - Morris Plains NJ, US
Feng LIANG - Morris Plains NJ, US

International Classification:

H01J 61/56
G01N 33/00

Abstract:

Methods, apparatuses, and systems for providing an alternating current (AC) voltage supply for a photoionization detector lamp from a direct current (DC) voltage source are provided. An example apparatus may include a DC voltage to DC voltage (DC/DC) converter circuitry, and a feedback circuitry that is electronically coupled to the DC/DC converter circuitry and converts a reference AC voltage to a feedback DC voltage for the DC/DC converter circuitry. In some examples, the feedback circuitry may be electronically coupled to a DC voltage to AC voltage (DC/AC) converting circuitry to obtain the reference AC voltage.

US Patent:

20200333292, Oct 22, 2020

Filed:

Nov 20, 2017

Appl. No.:

16/763334

Inventors:

- Morris Plains NJ, US
Bing CHEN - Morris Plains NJ, US
Junhui ZHANG - Morris Plains NJ, US
Feng LIANG - Morris Plains NJ, US

International Classification:

G01N 27/62

Abstract:

Embodiments relate generally to systems and methods for a low profile PID typically comprising a flexible substrate; two or more electrodes containing an array of holes; a spacer with one or more holes; and two or more contacts corresponding to the electrodes. Typically, the unfolded flexible substrate defines a plane, and the electrodes are disposed on the flexible substrate such that when the flexible substrate is folded, one electrode is located on a top plane and another electrode is located on a bottom plane and the spacer is disposed between the electrodes to form an ionization chamber for use with a UV radiation source.

US Patent:

20200292486, Sep 17, 2020

Filed:

Nov 1, 2017

Appl. No.:

16/760057

Inventors:

- Morris Plains NJ, US
Lei XIAO - Morris Plains NJ, US
Jianming JIN - Morris Plains NJ, US
Yan ZHANG - Morris Plains NJ, US
Feng LIANG - Morris Plains NJ, US

International Classification:

G01N 27/413

Abstract:

Embodiments relate generally to systems and methods for operating an electrochemical oxygen sensor at low relative humidity (i.e., 15% RH or less). A method may comprise operating an electrochemical sensor to detect oxygen in the field, wherein the electrochemical sensor comprises one or more electrodes and an electrolyte configured to electrically connect the one or more electrodes with an initial concentration of approximately 8 M sulfuric acid; and maintaining the sensor accuracy during the operation of the sensor to detect oxygen in the field, wherein the relative humidity of the environment is approximately 15% or less, without recalibrating the sensor using a source of nitrogen.