US 9,732,296 B2Granted

Fuel markers and methods of producing and using same

AssigneeAuthentix, Inc.

InventorsJeffrey L. Conroy, Philip B. Forshee, John-Christopher Boyer

Life of this patent

Estimating the term…

Loading patent…

Abstract

A composition comprising a fuel and at least one compound characterized by Formula I: wherein X is carbon, oxygen, or sulfur; R1 and R2 each independently are hydrogen, a C1 to C20 alkyl, or a C6 to C10 aryl; R3 and R3′ each independently are hydrogen or a C1 to C4 alkyl; R4 and R4′ each independently are hydrogen, a C1 to C4 alkyl, a C4 to C10 cycloalkyl, or a C6 to C10 aryl; R5 and R5′ each independently are a C4 to C10 alkyl; R6 and R6′ each independently are hydrogen or a C1 to C6 alkyl; and R7 and R7′ each independently are hydrogen or a C1 to C4 alkyl; and wherein the compound of Formula I when subjected to GC-MS using electron ionization at greater than about 70 eV produces at least one ion having a mass-to-charge ratio of from 300 to 600.

Claims36

Dependent claims

A composition comprising (a) a fuel and (b) at least one compound characterized by Formula I:

wherein X can be carbon (C), oxygen (O), or sulfur (S);
R1 and R2 can each independently be hydrogen, a C1 to C20 alkyl group, or a C6 to C10 aryl group;
R3 and R3′ can each independently be hydrogen or a C1 to C4 alkyl group;
R4 and R4′ can each independently be hydrogen, a C1 to C4 alkyl group, a C4 to C10 cycloalkyl group, or a C6 to C10 aryl group;
R5 and R5′ can each independently be a C4 to C10 alkyl group;
R6 and R6′ can each independently be hydrogen or a C1 to C6 alkyl group;
and R7 and R7′ can each independently be hydrogen or a C1 to C4 alkyl group;
and wherein the compound characterized by Formula I when subjected to gas chromatography mass spectrometry (GC-MS) using electron ionization produces at least one ion having a mass-to-charge ratio of from about 300 to about 600 at an ionization energy of equal to or greater than about 70 eV.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/806,381Filed 22 Jul 2015 · us provisional application
Priority: 20 Mar 2015
Published: US 2016/0272905 A122 Sep 2016
Granted: 15 Aug 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification27 codes

C10L 1/2406
Containing sulfur, selenium and/or tellurium: mercaptans; hydrocarbon sulfides
C07C 43/2055
The aromatic ring being a non-condensed ring: containing more than one ether bond
C07C 43/21
Having an ether-oxygen atom bound to a carbon atom of a six-membered aromatic ring: containing rings other than six-membered aromatic rings
C07C 43/263
Having an ether-oxygen atom bound to carbon atoms both belonging to six-membered aromatic rings: the aromatic rings being non-condensed