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The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Patent No.:

US 10308869 B1

PDFFull Text
Date of Patent:
Jun. 04, 2019

Filed:

Sep. 25, 2015

Liquid containing polymer marker, use of a polymer marker as authentication tool, and method and device for detecting a polymer marker dissolved in a liquid

Applicant:

Sicpa Holding SA, Prilly, CH;

Inventors:

Mia Milos-Schouwink, Montreux, CH;

Agnieszka Kapalka, Prilly, CH;

Jean-Luc Dorier, Bussigny, CH;

Lorenzo Sirigu, Lausanne, CH;

Lucia Giovanola, Ivrea, IT;

Paolo Schina, Turin, IT;

Silvia Baldi, Samone, IT;

Irma Disegna, Ivrea, IT;

Silvano Tori, Ivrea, IT;

Assignee:

SICPA HOLDING SA, Prilly, CH;

Attorney:

Muncy, Geissler, Olds & Lowe, P.C.

Primary Examiner:

Brian J Sines

Int. Cl.
CPC ...
C09K 11/06 (2006.01); G01N 21/76 (2006.01); G01N 1/18 (2006.01); G01N 1/00 (2006.01); C10L 1/00 (2006.01); C10L 1/16 (2006.01); G01N 21/64 (2006.01); B01L 3/00 (2006.01); G01N 1/40 (2006.01); G01N 33/28 (2006.01); G01N 35/10 (2006.01); G01N 35/00 (2006.01);
U.S. Cl.
CPC ...
C09K 11/06 (2013.01); B01L 3/502715 (2013.01); B01L 3/502753 (2013.01); C10L 1/003 (2013.01); C10L 1/165 (2013.01); G01N 1/4005 (2013.01); G01N 1/4077 (2013.01); G01N 21/643 (2013.01); G01N 21/6489 (2013.01); G01N 33/2882 (2013.01); G01N 35/10 (2013.01); B01L 2200/0647 (2013.01); B01L 2300/0681 (2013.01); B01L 2300/1805 (2013.01); B01L 2300/1894 (2013.01); B01L 2400/06 (2013.01); C09K 2211/1416 (2013.01); C09K 2211/1425 (2013.01); C10L 2230/16 (2013.01); G01N 2001/4016 (2013.01); G01N 2001/4088 (2013.01); G01N 2021/6439 (2013.01); G01N 2035/00207 (2013.01); G01N 2035/00376 (2013.01); G01N 2035/00445 (2013.01); G01N 2035/00475 (2013.01);
Abstract

The present invention relates to markers for liquids that can be used to authenticate the origin and genuineness of a liquid, preferably a bulk liquid such as fuel. For this purpose, the present invention teaches the use of a polymer capable of forming a semiconducting polymer particle (pdot) in the liquid in small amounts. The invention encompasses a liquid comprising a) a polymer that is capable of forming a semiconducting polymer particle (pdot), the concentration of the polymer being 10 ppm by weight or less, and b) an organic substance in an amount of 90% by weight or more. The invention furthermore envisages the use of such a polymer as an authenticating marker in a liquid, preferably a fuel, and a method for authenticating the genuineness and/or origin of a liquid comprising a polymer capable of forming a semiconducting polymer particle (pdot), comprising the steps

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