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.:
Date of Patent:
Jun. 07, 2022
Filed:
Feb. 19, 2019
Oxford University Innovation Limited, Oxford, GB;
Angus Ian Kirkland, Oxford, GB;
Paul Ewart, Oxford, GB;
Konstantin Borisenko, Oxford, GB;
Ben Williams, Oxford, GB;
Andrew Luers, Oxford, GB;
Giuliano Siligardi, Oxford, GB;
Rohanah Hussain, Oxford, GB;
OXFORD UNIVERSITY INNOVATION LIMITED, Oxford, GB;
Abstract
A method and system for writing a label (defined within a predetermined region of the sample), the label displaying a visible layout of light-modified regions in a predetermined spatial arrangement. The method comprises: modifying regions of a material within the label using light, wherein the modifying comprises using light of a first polarisation state to provide photo-induced optically active regions of a first type having a first optical activity state which is characteristic of having been formed by light of the first polarisation state, in order to encode covert information in the label using the locations of the first type of light-modified regions within the spatial arrangement of the label.