American Air Liquide, Inc.

L'air Liquide, Soci&#xe9;t&#xe9; Anonyme Pour L'etude Et L'exploitation Des Proc&#xe9;d&#xe9;s Georges Claude

Other

L'air Liquide, Societe Anonyme Pour L'etude Et L'exploitation Des

Airgas, Inc.

Air Liquide America, L.p.

Air Liquide Electronics Chemicals & Services, Inc.

Air Liquide Deutschland Gmbh

Tracey Jacksier

Robert Benesch

Malik Haouchine

John P Borzio

Denis Muller

David N Vassallo

John Kuhn

Reha Tepe

David Kihumbu

Mani C Matthew

Hwa-Chi Wang

Joe G Hoffman

Vincent M Omarjee

R Scot Clark

Ronald S Inman

Mindi Xu

Benjamin Jurcik

James J F McAndrew

Wallace I Yuan

Carol Ann Schnepper

George D Baker

Dmitry Znamensky

Anthony W Reccek, Jr

Eric Coffre

Megumi Isaji

James McHALE

Jun Sonobe

Bruce Talbert

Richard A Socki

Martin Vasarhelyi

Karine Saint-Cyr

Farouk Kimour

Janet Graehling

Aurelie Grimberg

Yanyu Duan

Johann Ponzgraz

Johann Pongraz

James L Mchale

George Baker

A quality control method for the preparation of dry compressed gas cylinder including passivating and/or preparing the compressed gas cylinder with the technique to be validated, filling the passivated/prepared compressed gas cylinder with gaseous carbon dioxide to a normal working pressure, wherein the gaseous carbon dioxide has a known δO isotope ratio, maintaining the pressurized gas cylinder at ambient temperature for a first predetermined period of time, and gradually emptying the pressurized gas cylinder, while simultaneously measuring the δO isotopic ratio, wherein a predetermined variation in the measured isotopic ratio of δO indicates a properly prepared cylinder.

Use of stable isotopes of COto validate cylinder preparation

The disclosure relates to a manufactured composition, material or device comprising at least two different nonradioactive isotope atoms. Each nonradioactive isotope atom is present in an amount sufficient to increase the total amount of the nonradioactive isotope atom above the total amount found in the manufactured composition, material or device in the absence of adding the nonradioactive isotope atom to increase said total amount. The ratio(s) of the at least two nonradioactive isotopes in the manufactured composition, material or device are measurably different than the ratio(s) found in the manufactured composition, material or device in the absence of adding the nonradioactive isotope atom to increase said total amount.

Use of stable isotopes to prove authentication of manufacturing location

The present invention relates to a method for producing and delivering a gas mixture having a selected composition of a first gas and at least one second gas, comprising the following steps: (a) providing a main gas flow comprising the first gas in a main conduit, (b) separating the main gas flow into a first plurality of secondary gas flows, (c) guiding each secondary gas flow through a secondary conduit, (d) adding at least one second gas to at least one of the first plurality of secondary gas flows in the respective secondary conduit through a delivering conduit, said delivering conduit protruding into the secondary conduit, and (e) combining the first plurality of secondary gas flows to the gas mixture. With the technical teaching of the present invention a dynamic gas bottle filling is possible wherein the second gas components may have a concentration form some ppb to percent.

Method and apparatus for dynamic gas mixture production

Disclosed is a system and method for removing trace levels of krypton and xenon from argon by using metal organic framework (MOF) adsorbents.

Removal of krypton and xenon impurities from argon by MOF adsorbent

A purification process has been developed that allows the removal of several different impurities from unsaturated hydrocarbons. The purification process uses various adsorbents and metal oxides or getters to accomplish the purification. The process is capable of removing the following impurities: SO, HO, O, COand CO.

Systems and methods for purifying unsaturated hydrocarbon(s), and compositions resulting therefrom

Articles of manufacture and methods of making and using same concern a container having an internal space and a passivated internal metal surface. The container contains a composition of an acid gas and a balance gas contained within the internal space and in contact with the passivated internal metal surface. The stability of the acid gas concentration over time is enhanced.

Articles of manufacture containing increased stability low concentration gases and methods of making and using the same

Methods of passivating a metal surface are described, the methods comprising the steps of exposing the metal surface to a silicon-containing passivation material, evacuating the metal surface, exposing the treated surface to a gas composition, having a concentration of reactive gas that is greater than an intended reactive gas concentration of gas to be transported by the metal surface, evacuating the metal surface to remove substantially all of the gas composition to enable maintenance of an increased shelf-life, low concentration reactive gas at an intended concentration, and exposing the metal surface to the reactive gas at the intended reactive gas concentration. Manufactured products, high stability fluids, and methods of making same are also described.

Reactive gases with concentrations of increased stability and processes for manufacturing same

Methods of passivating a metal surface are described, the methods comprising the steps of i) exposing the metal surface to a silicon-containing passivation material; ii) evacuating the metal surface; iii) exposing the treated surface to a gas composition having a concentration of reactive gas that is greater than an intended reactive gas concentration of gas to be transported by the metal surface; iv) evacuating the metal surface to remove substantially all of the gas composition to enable maintenance of an increased shelf-life, low concentration reactive gas at an intended concentration; and v) exposing the metal surface to the reactive gas at the intended reactive gas concentration. Manufactured products, high stability fluids, and methods of making same are also described.

Increased stability low concentration gases, products comprising same, and methods of making same

Compositions comprising a reactive gas and a matrix gas are disclosed, as well as articles of manufacture and methods of making the articles. The methods of manufacturing preferably employ zeolites to remove moisture from the reactive gas and from the matrix gas, and then combine the moisture reduced gases either in a container, or prior to filling a container, which has been previously vacuum-baked and passivated. The invention produces stable standard gas compositions having improved shelf-life.

Reduced moisture compositions comprising an acid gas and a matrix gas, articles of manufacture comprising said compositions, and processes for manufacturing same

A filter-less regulator is implemented for use in fluid flow systems that process low concentration reactive gases. The regulator includes an inlet, an outlet and a fluid flow path defined between the inlet and outlet by internal surfaces of the housing. The regulator further includes a pressure regulating section to reduce the pressure of a reactive gas flowing through the regulator between the housing inlet and the housing outlet. The internal surfaces of the housing are formed of a suitable material and the combined area of the internal surfaces is sufficiently sized to facilitate use of the regulator in the system without prior passivation for reactive gases at low concentrations (e.g., in the range of about 10 ppm or lower) while minimizing or substantially preventing significant loss of the reactive gas due to reaction and/or adsorption within the regulator.

Regulator for low concentration corrosive and reactive gases

Growing community of inventors

Lisle, IL, United States of America

Tracey Jacksier