Use of stable isotopes to prove authentication of manufacturing location

US11679156B2 · kind B2 · utility

Assignees

• American Air Liquide, Inc. · US
• Airgas, Inc. · US
• L'Air Liquide, Societe Anonyme Pour l'Etude et l'Exploitation des Procedes Georges Claude · FR

Inventors

• Tracey Jacksier · Lisle, US
• Mani C. Matthew · Neshanic Station, US
• Anthony W. Reccek, Jr. · Corinth, US
• Martin Vasarhelyi · Middelfart, DK
• Vincent M. Omarjee · Grenoble, FR

Key dates

• Filing date: Nov 1, 2018
• Grant date: Jun 20, 2023
• Expiry date: Dec 30, 2039

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N33/32
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

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.